Search results
Results from the WOW.Com Content Network
Herpes simplex viruses can affect areas of skin exposed to contact with an infected person. An example of this is herpetic whitlow , which is a herpes infection on the fingers; it was commonly found on dental surgeon 's hands before the routine use of gloves when treating patients.
Herpes transmission occurs between discordant partners; a person with a history of infection (HSV seropositive) can pass the virus to an HSV seronegative person. Herpes simplex virus 2 is typically contracted through direct skin-to-skin contact with an infected individual, but can also be contracted by exposure to infected saliva, semen ...
Nine herpesvirus types are known to primarily infect humans, [7] at least five of which are extremely widespread among most human populations, and which cause common diseases: herpes simplex 1 and 2 (HSV-1 and HSV-2, also known as HHV-1 and HHV-2; both of which can cause orolabial and genital herpes), varicella zoster (VZV or HHV-3; the cause ...
Herpes simplex virus 1 can be classified into six clades. [3] Four of these occur in East Africa, one in East Asia and one in Europe and North America. This suggests that the virus may have originated in East Africa. The most recent common ancestor of the Eurasian strains appears to have evolved ~60,000 years ago. [4]
About 90% of cases of herpes encephalitis are caused by herpes simplex virus-1 (HSV-1), the same virus that causes cold sores. According to a 2006 estimate, 57% of American adults were infected with HSV-1, [3] which is spread through droplets, casual contact and sometimes sexual contact, though most infected people never have cold sores.
Herpes simplex virus 2 is periodically shed in the human genital tract, most often asymptomatically. Most sexual transmissions occur during periods of asymptomatic shedding. [ 6 ] Asymptomatic reactivation means that the virus causes atypical, subtle, or hard-to-notice symptoms that are not identified as an active herpes infection, so acquiring ...
Herpes simplex virions. Herpes simplex virus 1 and 2 (HSV 1 and HSV 2) are part of the alpha subfamily of herpesviruses. The lytic phase of infection occurs within mucoepithelial cells while the latent infection of these cells occurs in neurons. These two viruses are the cause of oral and genital herpes. [4]
Genital herpes is a herpes infection of the genitals caused by the herpes simplex virus (HSV). [1] Most people either have no or mild symptoms and thus do not know they are infected. [1] When symptoms do occur, they typically include small blisters that break open to form painful ulcers. [1]