But Cases Of Sexually Transmitted HSV-1 Is Growing

HSV-1 causes small, clear blisters (also known as cold sores, fever blisters, or oral herpes) on the skin. Emotional or physical stresses (like exhaustion or an illness), sun exposure, menstruation, or fever can all trigger such an outbreak, but sometimes active herpes infection returns for no apparent reason. But evidence has long been growing that herpes can be transmitted even when no lesions are visible. In the United States, more people have genital herpes than all other sexually transmitted infections combined – 50 million people in total. A million new cases a year in the USA alone,you do the math. Hot Topics in Sexually Transmitted Infections and Associated Conditions. Owing to rising frequencies of oral-genital sexual exposures, HSV-1 has grown to account for 50 to 70 percent of initial genital herpes infections in the United States. Most cases of genital herpes are due to transmission from a partner who is asymptomatic at the time of transmission or is unaware he or she is infected.

But cases of sexually transmitted HSV-1 is growing 2Herpes is one of the most common sexually transmitted infections. Blood tests are not routinely done, but in some cases (e.g. pregnancy), blood tests may be helpful. Herpes Dr. Tom covers transmission, treatments, medications, symptoms. She told me that she has 1st.degree herpes and it can only be spread if I had oral sex with her, but she performed oral sex on me. Current data about oral herpes reports you CAN transmit the virus even though no symptoms are evident. One cannot grow out of a herpes infection. HSV-2 is spread through sexual contact. You may be infected with HSV-1 or HSV-2 but not show any symptoms. Often symptoms are triggered by exposure to the sun, fever, menstruation, emotional stress, a weakened immune system, or an illness.

HSV-2 infections are almost always sexually acquired, whereas HSV-1 infections may be caused by anogenital or orolabial infections. Quinolones have been increasingly used for oral therapy, but recently there have been reports of strains of increasing quinolone-resistant N. The warts often itch and, if allowed to grow, can block openings of the vagina, anus, or throat, causing discomfort. In cases of either large or persistent warts, other treatments may include surgical removal, freezing using liquid nitrogen, or cauterization by electric needles; however, the warts often recur. Most people think that herpes is contagious only when the sores are present, but studies have shown that some people may spread the disease even when they have no sores. Additionally, if the woman is pregnant, her developing fetus is at risk, because chlamydia can be passed on during her pregnancy or delivery and could lead to eye infections or pneumonia in the infant.

Herpes Simplex Virus

This page contains notes on herpes simplex viruses. The virus can be grown in many different animal species and on many types of cell cultures. In most cases, the seedlings come to naught, unless spread to the brain occurs. The first episode is usually a primary infection but can be an exogenous infection in an already immune individual. Genital herpes is a genital infection caused by the herpes simplex virus (HSV). Most individuals carrying herpes are unaware they have been infected and many will never suffer an outbreak, which involves blisters similar to cold sores. In rare cases, involvement of the sacral region of the spinal cord can cause acute urinary retention and one-sided symptoms and signs of myeloradiculitis (a combination of myelitis and radiculitis): pain, sensory loss, abnormal sensations (paresthesia) and rash. Tests for herpes are not routinely included among STD screenings. Early 20th century public health legislation in the United Kingdom required compulsory treatment for sexually transmitted diseases but did not include herpes because it was not serious enough. Often people refer only to HSV-2 when discussing genital herpes but both types can cause infection in the genital area. With each episode of herpes simplex, the virus grows down the nerves and out into the skin or mucous membranes where it multiplies, causing the clinical lesion. In most cases, however, no reason for the recurrence is evident. This is when the infection is most likely to be passed on and sexual contact should therefore be avoided. HSV-2 is primarily sexually transmitted, so it is less common than HSV-1 in children. Genital herpes is usually caused by HSV-2, but reports of genital herpes secondary to HSV-1 infection are increasing. Genital herpes is one of the most common sexually transmitted infections (STIs; Genital herpes is one of the most common sexually transmitted infections (STIs; these are also known by the older term sexually transmitted diseases or STDs) in North America and Europe, and the percentage of the population with this condition is growing around the world. Sometimes, reactivations of the virus do not cause blister formation but the person remains contagious nonetheless, even though there are no visible sores. Oral sex with an infected partner can transmit HSV-1 to the genital area. Most new cases of genital herpes infection do not cause symptoms, and many people infected with HSV-2 are unaware that they have genital herpes. In the past, genital herpes was mostly caused by HSV-2, but HSV-1 genital infection is increasing.

Sexually Transmitted Diseases

The herpes simplex virus is a contagious virus that can be passed from person to person through direct contact. Who Is At Risk of Developing Herpes Simplex Infections? In cases of sexually transmitted HSV, people are more at risk when they participate in risky sexual behavior without the use of protection, such as condoms. If the individual is not experiencing symptoms but has previously been diagnosed with the virus, a condom should be used during intercourse. Genital herpes is a sexually transmitted disease (STD) that’s usually caused by the herpes simplex virus type 2 (HSV-2). Information regarding Oral Herpes Simplex virus 1 or cold sores and Genital Herpes known as Simplex virus 2. Benzocaine and lidocaine are two common numbing agents that work to relieve not only pain, but also burning and itching that is associated with this disease. Herpes is a common sexually transmitted disease (STD) that any sexually active person can get. If the number of people infected with genital herpes continues to grow at the present rate, it is predicted that in time nearly half the US adult population will have genital herpes. In fact, in new cases of genital herpes the number of HSV-1 cases now matches and even exceeds that of HSV-2. When the crust falls off, the lesions are no longer contagious. When shedding, the virus begins to multiply and becomes transmittable, but without any apparent symptoms. Genital herpes, which typically affects the penis, vulva, and rectum, is usually caused by HSV-2, although the rate of HSV-1 genital infection is increasing.

Herpes simplex is most easily transmitted by direct contact with a lesion or with the body fluid of an infected individual although transmission may also occur through skin-to-skin contact during periods of asymptomatic shedding. Primary HSV infection in adolescents frequently manifests as severe pharyngitis with lesions developing on the cheek and gums. In the case of oral herpes, following a primary infection, the virus enters the nerves at the site of primary infection, migrating to the ganglion associated with the local nerve (trigeminal, or 5th cranial nerve) supply (the trigeminal ganglion). Glands & Growth Head Neck & Nervous System Heart Infections Learning Disabilities Obesity Orthopedic Prevention Sexually Transmitted Skin Tobacco Treatments Injuries & Emergencies Vaccine Preventable Diseases. In most cases, these facial sores are caused by the HSV type 1 (HSV-1) strain. The genital form of the infection is a sexually transmitted disease (STD). In most cases, your youngster can attend school with an active infection, but your pediatrician may suggest keeping him home if he has a primary outbreak. HSV-2 is frequently a sexually transmitted disease, but HSV-1 also may be acquired during oral sex and found in the genital area. A sample of fluid is collected via swab from an open sore and inoculated into cells that allow the virus to grow. Get the facts about this common STD caused by the herpes simplex virus. A herpes infection may cause only a single outbreak of sores, but in many cases the person will have more outbreaks. Can I get herpes if my partner performs oral sex on me while having a cold sore? Both types have the potential, but is rare, to be transmitted when no visible signs/symptoms are present (a. They usually grow in more than one place and there may be a number of warts in a cluster. STIs are complicated; a different microorganism causes each infection, which means the symptoms for each STI vary as well. HSV-1 is initially transmitted in childhood via nonsexual contact, but it may be acquired in young adulthood through sexual contact. Significant predictors of HSV-1 antibodies in this population were female sex, sexual intercourse before 15 years of age, greater total years of sexual activity, history of a partner with oral sores, and personal history of a non-HSV sexually transmitted disease.2 Approximately 90 percent of recurrent HSV-1 infections cause the orofacial lesions known as herpes labialis3 (Figure 1). Herpetic sycosis is a follicular infection with HSV that causes vesiculopapular lesions in the beard area. 50 percent.6 Viral isolates usually grow in tissue culture by five days.

More US Teens Susceptible To HSV-1 Infection, A Growing Cause Of Genital Herpes

More US teens susceptible to HSV-1 infection, a growing cause of genital herpes 1

A new study suggests a growing number of US adolescents lack antibodies that may help protect them later in life against an increasingly important cause of genital herpes. More US teens susceptible to HSV-1 infection, a cause of genital herpes. More US Teens Susceptible to HSV-1 Infection, a Growing Cause of Genital Herpes. Adolescents lack antibodies that may help protect them later in life against an increasingly important cause of genital herpes. Today’s teens are more susceptible to genital herpes than teens a decade ago but not for the reasons one might expect. Researchers say it’s due to a decline in childhood exposure to herpes simplex virus (HSV) type 1, which causes cold sores and is a growing cause of genital herpes. Declines in early childhood acquisition of HSV-1 means more young people are susceptible to genital HSV-1 infection, and symptomatic HSV-2 disease is more likely among persons lacking HSV-1 antibodies, the authors write. You can depend on us to provide expert content along with genuine caring.

Herpes simplex virus type 1 and type 2 (HSV-1 and -2) infections are common among adolescents 2Herpes simplex viruses are among the most ubiquitous of human infections. Women have a greater risk of HSV-2 acquisition, reflecting both increased biologic susceptibility and pattern of relationships with older men, who are more likely to be HSV-2 seropositive. The more common cause of genital herpes is HSV-2. Even after it has entered the cells, the virus never causes symptoms in most cases. Information regarding Oral Herpes Simplex virus 1 or cold sores and Genital Herpes known as Simplex virus 2. More than fifty million people in the United States have the virus. As with almost all sexually transmitted infections, women are more susceptible to acquiring genital HSV-2 than men. If the number of people infected with genital herpes continues to grow at the present rate, it is predicted that in time nearly half the US adult population will have genital herpes.

An effective vaccine against the virus that causes genital herpes has evaded researchers for decades. More US teens susceptible to HSV-1 infection, a growing cause of genital herpes. Seroprevalence of HSV-1 increased slightly among black women (0.9 percent/year). Explore further: Persons with herpes simplex virus type 2, but without symptoms, still shed virus. More US teens susceptible to HSV-1 infection, a growing cause of genital herpes. Genital herpes is a STI caused by the herpes simplex viruses type 1 (HSV-1) & type 2 (HSV-2). Herpes can make people more susceptible to HIV infection, and it can make HIV-infected individuals more infectious. National Herpes Resource Center, A service of the American Social Health Association (ASHA).

Persistence In The Population: Epidemiology, Transmission

Herpes simplex virus-2 has been linked to increased risk of cervical cancer. Although these unusual symptoms do not happen that often, about 750,000 new cases of genital herpes occur in the US every year, as investigators point out, so they are not all that rare. And more sensitive testing detected the virus in another six people. Teen-agers tend to get this when they start kissing, she said. Cold sores linked to heart attack risk It’s no news that lifestyle factors such as diet and exercise affect the risk of heart disease, but new research adds to growing evidence that infections and inflammation may play at least some role as well. It seems that HSV-1 is now starting to cause genital herpes. The growing trend for young people to be involved in oral sex might be one cause of this shift. Why are teens more susceptible to genital herpes now? That means that fewer U.S. teens have protective HSV-1 antibodies. This page contains notes on herpes simplex viruses. A. Primary Infection;- Man is the only natural host to HSV, the virus is spread by contact, the usual site for the implantation is skin or mucous membrane. It may be infected by oral or genital lesions from the mother, a herpetic whitlow in a nurse, the father’s eye etc. Thereafter, the same site is prone to recurrences caused by reactivation of the original virus. Our growing knowledge of the role of viruses as a cause of cancer has led to the development of vaccines to help prevent certain human cancers. Most sexually active people are infected with one or more of these HPV types at some point in their lives. HPV infections of the mucous membranes can cause genital warts, but they usually have no symptoms. As with other herpes virus infections, EBV infection is life-long, even though most people have no symptoms after the first few weeks. The majority of STI’s are asymptomatic (no symptoms). Women are more likely then are men to have asymptomatic infections, and also have greater biological susceptibility to acquire infections if exposed. Viral STIs, including HPV, herpes, hepatitis, and HIV, cannot be cured, though they can often be treated. Currently, the most commonly reported infectious disease in the United States as well as the leading cause of infertility and ectopic pregnancy. A new American study suggests a growing number of young people lack antibodies that may help protect them later in life – essentially because they were ‘sheltered’ from cold sores as children. Though both viruses can cause genital herpes, HSV-2 has traditionally been thought of as more likely to. ‘Adolescents who reach that age without being exposed to HSV-1 might, through oral sex, be more susceptible to the infection.’.

Medical Xpress

A growing number of teens in the U.S. lack the antibodies that would help protect them against genital herpes in later life, according to a study published in the Oct. Without these antibodies, noted a news release, today’s teens may be more susceptible to genital infections caused by HSV-1 when they become sexually active. Although both viruses can cause genital herpes, in the past, HSV-1 has been associated with fewer recurrences of the genital-type infection. A sample of fluid is collected via swab from an open sore and inoculated into cells that allow the virus to grow. Research tells us that lesbian and bisexual women are at a higher risk for certain problems than other women are, though. Bisexual women may be more likely to get infected with STIs that are less common for lesbians, since bisexuals have typically had sex with men in the past or are presently having sex with a man. Genital herpes is an STI caused by the herpes simplex viruses type 1 (HSV-1) or type 2 (HSV-2). Two vaccines (Cervarix and Gardasil) can protect girls and young women against the types of HPV that cause most cervical cancers. More U.S. Teens Susceptible to HSV-1 Infection, A Growing Cause of Genital Herpes Prevention examined HSV-1 and HSV-2 prevalence among 14 to 49 year olds.

Herpes simplex virus (HSV) is a common cause of infections of the skin and mucous membranes and an uncommon cause of more serious infections in other parts of the body. The virus penetrates vulnerable cells in the lower layers of skin tissue and attempts to replicate itself in the cell nuclei. American adults harbored HSV-2, only 2.6 had symptomatic infection. Recurrent attacks of HSV feature most of the same symptoms at the same sites as the primary attack, but they tend to be milder and briefer.

Lysine Helps Prevent The Herpes Virus From Growing

Lysine is important for proper growth, and it plays an essential role in the production of carnitine, a nutrient responsible for converting fatty acids into energy and helping lower cholesterol. One review found that oral lysine is more effective atpreventing an HSV outbreak than it is at reducing the severity and duration of an outbreak. Lysine helps the body absorb calcium and reduces the amount of calcium that is lost in urine. Lysine helps prevent the herpes virus from growing. These new discoveries are helping us better understand the herpes virus. As of yet, there is NO cure. Vaccines will only function to prevent the infection in new patients. Sea Vegetables have more nutrients and minerals than plants grown on land. Is it true that the amino acid called lysine, is good for herpes outbreaks? Yes.

Lysine helps prevent the herpes virus from growing 2Find patient medical information for LYSINE on WebMD including its uses, effectiveness, side effects and safety, interactions, user ratings and products that have it. Lysine seems to prevent the herpes virus from growing. Whether or not you take drugs to suppress future outbreaks of HSV-1 (facial herpes) and HSV-2 (genital herpes), to get outbreaks under control a strong immune system is necessary. Too much arginine can trigger an outbreak because the herpes virus needs arginine to in order to grow and multiply. Some you may already take lysine to reduce the frequency or severity of outbreaks. Reduce the dose to 500 mg three times a day for one week following healing.

Genital herpes is a sexually transmitted disease. Lysine is important for proper growth; it helps promote calcium absorption and is integral to the formation of collagen. Every one can prevent cold sore virus outbreaks, herpes virus, from reoccurring quite easily. A list of foods rich in lysine and low in arginine is outlined in the tables in this informational material for your convenience. At this point I decided to try to make myself a treatment that could help me to get rid of unwanted and unpleasant cold sores which were controlling my life when an outbreak occurred. This product is an essential amino acid or protein building block that cannot be produced by the body and must be obtained from other nutrients. Our L-Lysine supplements help to ensure the adequate absorption of calcium and the formation of collagen for bone, cartilage and connective tissue. When added to the herpes virus, the amino acid L-Arginine increases the growth of the virus.

Lysine: Uses, Side Effects, Interactions And Warnings

L-lysine does appear to help control herpes cold sore outbreaks. L-lysine appears to block the action of an amino acid that HSV-1 needs to grow and divide. Taking long-term oral acyclovir after an initial episode of ocular HSV reduces recurrences by about 45. Pregnant women who are infected with either HSV-2 or HSV-1 genital herpes have a higher risk for miscarriage, premature labor, retarded fetal growth, or transmission of the HSV infection to the infant while in the uterus or at the time of delivery. Some people take supplements of L-lysine to prevent cold sores; 1,000 mg per day seems to help sores heal rapidly. Studies suggest that following a diet rich in lysine (or taking a lysine supplement), while not curing the virus, may prevent outbreaks of genital herpes and cold sores associated with the herpes virus. 1. Lysine stops the development of herpes. Thus, the amino acid arginine accelerates the growth of the virus, and lysine, by contrast, extends the period of remission with labial herpes (on lips) and genital herpes, and prevents relapse. Like all amino acids, lysine functions as a building block for proteins. It is necessary for proper growth and helps form collagen which comprises bone cartilage and connective tissues. Herpes virus requires many proteins with the amino acid arginine, and lysine competes directly with arginine in many of these processes. HSV-1 is the main cause of herpes infections on the mouth and lips, including cold sores and fever blisters. There is no cure for herpes, so the goals of treatment are to reduce the number of outbreaks and to lessen symptoms when you do have an outbreak. Several studies suggest that lysine may help reduce the number of recurring outbreaks of cold sores. Pregnant women who are infected with HSV-1 or HSV-2 have a higher risk of miscarriage, premature labor, slow fetal growth, or transmission of the herpes infection to the infant during vaginal delivery.

Does L-lysine Help Prevent Genital Herpes?

There is no true cure for the virus, or the cold sores. L-lysine helps inhibit the wicked work of an ammino acid called arginine, which has been shown to cause outbreaks, and may help speed up the healing process as well. The good news is that it’s a lot less traumatic to use at your own will, nor does it seem to hurt as bad now that you’ve grown up a bit. L-lysine is an essential amino acid used by the body as a building block for many functions important to growth and maintenance of health. As a building block for protein, amino acids like L-lysine are necessary for normal growth and development. Ocular herpes, or eye herpes is caused by the type 1 herpes simplex virus, which causes cold sores. Arginine is necessary for HSV to grow, suggesting supplementation with lysine. Although more research is needed, some studies have found that lysine, or L-lysine, an essential amino acid, taken on a regular basis may help prevent outbreaks of cold sores and genital herpes. Herpes virus. Cold sores (also called fever blisters) are caused by the herpes simplex virus. Increase lysine and reduce arginine in your diet. The herpes virus feeds on an amino acid called arginine, which may also stimulate its reproduction.

Use a product containing lysine. Lysine is an amino acid that effectively prevents cold sores from forming. It stops the herpes virus from growing when applied to the skin. Lysine which can be found in pill form or in a topical form at any health food store and some grocery stores. Tea tree oil will help it to dry out faster and also helps to disinfect it. With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts. There are many ways to get rid of a cold sore, usually the cold sore is caused by already irritated skin which allows the herpes virus to emerge and create a painful sore on the outside of your mouth.

Teens Susceptible To HSV-1 Infection, A Growing Cause Of Genital Herpes

Teens Susceptible to HSV-1 Infection, a Growing Cause of Genital Herpes 1

A new study suggests a growing number of US adolescents lack antibodies that may help protect them later in life against an increasingly important cause of genital herpes. Teens today have fewer herpes antibodies than those a decade ago, making them more susceptible to a serious infection when they become sexually active. (HSV) type 1, which causes cold sores and is a growing cause of genital herpes. Declines in early childhood acquisition of HSV-1 means more young people are susceptible to genital HSV-1 infection, and symptomatic HSV-2 disease is more likely among persons lacking HSV-1 antibodies, the authors write. HSV-1 is less likely to present as genital herpes in men and in pregnant women than HSV-2, Kimberlin writes. HSV-1 and another herpes virus — herpes simplex virus type 2 (HSV-2) — make up genital herpes. That’s one in five teens or adults. Symptoms of STDs.

Herpes simplex virus type 1 and type 2 (HSV-1 and -2) infections are common among adolescents 2Information regarding Oral Herpes Simplex virus 1 or cold sores and Genital Herpes known as Simplex virus 2. As with almost all sexually transmitted infections, women are more susceptible to acquiring genital HSV-2 than men. If the number of people infected with genital herpes continues to grow at the present rate, it is predicted that in time nearly half the US adult population will have genital herpes. Kids Height to Weight ChartEasy to read height to weight ratio charts from newborn babies to teenage girls and boys. Teens today may be more susceptible to one type of genital herpes infection once they become sexually active than teens in years past, a new study suggests. In addition, teen who lack antibodies against HSV-1 may be more likely to develop symptoms from an infection with herpes simplex virus type 2 (HSV-2), another type of herpes simplex virus that is almost always transmitted sexually, and tends to cause more severe disease than HSV-1. Factors that may trigger a recurrence of oral herpes simplex include immunosuppression (eg, corticosteroids), upper respiratory tract infections, fatigue, emotional stress, physical trauma, exposure to sun (ultraviolet light), trauma and menstruation. Obesity may increase susceptibility to HSV-1 infection.

Genital herpes is a STI caused by the herpes simplex viruses type 1 (HSV-1) & type 2 (HSV-2). Herpes can make people more susceptible to HIV infection, and it can make HIV-infected individuals more infectious. Herpes simplex virus-2 has been linked to increased risk of cervical cancer. What HSV-1 infection did appear to do was to prevent symptoms when the individual became infected with the genital herpes virus, HSV-2. And more sensitive testing detected the virus in another six people. Teen-agers tend to get this when they start kissing, she said. These relationships may explain the higher mortality rates observed among (heart attack) patients with an elevated white blood cell count and help to clarify the growing body of evidence that links inflammation and cardiovascular disease, Gibson and colleagues conclude. Bisexual women may be more likely to get infected with STIs that are less common for lesbians, since bisexuals have typically had sex with men in the past or are presently having sex with a man. Genital herpes is an STI caused by the herpes simplex viruses type 1 (HSV-1) or type 2 (HSV-2). Two vaccines (Cervarix and Gardasil) can protect girls and young women against the types of HPV that cause most cervical cancers. It is caused by a type of bacteria that can grow in warm, moist areas of the reproductive tract, like the cervix, uterus, and fallopian tubes in women.

Herpes: Causes, Symptoms & Treatment

Teens Susceptible to HSV-1 Infection, A Growing Cause of Genital Herpes Prevention examined HSV-1 and HSV-2 prevalence among 14 to 49 year olds. It seems that HSV-1 is now starting to cause genital herpes. The growing trend for young people to be involved in oral sex might be one cause of this shift. Why are teens more susceptible to genital herpes now? So, their first sexual encounter leaves them more likely to be infected with genital herpes than teens in the recent past. Herpes simplex virus (HSV) is a common cause of infections of the skin and mucous membranes and an uncommon cause of more serious infections in other parts of the body. For purposes of this report, HSV-2 refers to genital herpes and HSV-1 to oral herpes, unless the distinctions are specifically discussed. The virus penetrates vulnerable cells in the lower layers of skin tissue and attempts to replicate itself in the cell nuclei. Pregnant women who are infected with either HSV-2 or HSV-1 genital herpes have a higher risk for miscarriage, premature labor, retarded fetal growth, or transmission of the HSV infection to the infant while in the uterus or at the time of delivery. This page contains notes on herpes simplex viruses. The virus can be grown in many different animal species and on many types of cell cultures. HSV is spread by contact, as the virus is shed in saliva, tears, genital and other secretions, By far the most common form of infection results from a kiss given to a child or adult from a person shedding the virus. It was said that HSV-1 causes infection above the belt and HSV-2 below the belt. Herpes simplex virus (HSV), a recurrent viral infection, is caused by Herpes virus hominis (HVH), a widespread infectious agent. However by early teens, when sexual contact begins, genital infections rise dramatically, continuing for the next twenty years. The skin becomes red and sensitive, and soon afterward, one or more blisters or bumps appear. And when lysine is present, it inhibits the growth of HSV by knocking out arginine. Late developers may be more susceptible to high risk sexually transmitted infections than sexually precocious younger teens, suggests research in the journal Sexually Transmitted Infections. More U.S. Teens Susceptible to HSV-1 Infection, a Growing Cause of Genital Herpes.

Types Of Stis: Genital Herpes

Individuals are vulnerable to dental caries throughout life, with 85 percent of adults aged 18 and older affected. Like dental caries, the periodontal diseases are infections caused by bacteria in the biofilm (dental plaque) that forms on oral surfaces. Localized juvenile periodontitis (LJP) mainly affects the first molar and incisor teeth of teenagers and young adults, with rapid destruction of bone but almost no telltale signs of inflammation and very little supragingival plaque or calculus. However, HSV-1 is an increasingly common cause of genital herpes too.