Autoinoculation herpes of the hand in a child with recurrent herpes labialis

Herpes simplex virus infection of the hand

The first episode of herpes simplex virus (HSV) infection of the hand can occur in association with infection at another site, such as primary HSV-1 gingivostomatitis. Autoinoculation is the likely route of transmission. The attacks are usually solitary and last about 14 days. A first episode that results from exogenous inoculation may be severely inflammatory and may last up to 28 days. The majority of cases are recurrent infections and most often occur in adults with HSV-2 infection.

Herpes simplex virus infection of the hand. A profile of 79 cases

Seventy-nine cases of herpes simplex (HSV) infection of the hand were documented by viral culture over a 40-month period. A marked bimodal age distribution was found with 32 cases occurring in adults aged 21 to 30 years and 16 occurring in children less than 10 years old. The infection most commonly occurred on the fingers (69 percent) and thumb (21 percent). All 20 herpes simplex type 2 (HSV-2) isolates came from patients over 20 years old. All of the 13 specimens that were typed after isolation from patients under 20 years old were herpes simplex type 1 (HSV-1). Only seven of the 49 adult cases were identified in health care professionals. In this series, HSV infection of the hand occurred in 2.4 cases per 100,000 population per year. In adults, women with recurrent infections from HSV-2 and a history compatible with genital herpes predominated. In children, a primary HSV-1 infection associated with gingivostomatitis was common.

The herpes simplex problem

Most of the world's population is eventually infected with herpes simplex virus type 1, type 2, or both. Most infected persons harbor latent virus in nerve ganglia for the rest of their lives. True primary infections, nonprimary first-episode infections, and recurrent infections can be asymptomatic or clinical, but all of these are contagious. Past estimates of recurrent herpes affecting 20% to 40% of the population are probably low because of inadequate studies of asymptomatic shedding and genital recurrences. Herpes infections are spread primarily by close personal contact but some are contracted by fomites and medical-dental procedures. Latent virus harbored by almost everyone with frequent reactivation to produce symptomatic or asymptomatic, infectious recurrent disease poses a huge problem for control or eradication of herpes simplex infections. Public health measures will probably fail because they require too much alteration of the public's life-styles. So far, antiviral drugs do not eliminate latent virus from infected ganglia. That naturally infected persons can be reinfected, superinfected, or autoinoculated raises serious questions whether vaccines will eradicate the disease, although they might control some serious manifestations and limit some spreading. The problem of eradicating herpes is different from that of eradicating smallpox, where latent infections with infectious recurrences did not exist.