Showing posts with label herpes simplex. Show all posts
Showing posts with label herpes simplex. Show all posts

Herpes Simplex Transmission

Herpes simplex is a viral infection caused by herpes simplex virus type I and II (HSV-I and HSV-II). HSV-I often attacks the area around the mouth (herpes labialis), while HSV-II is often on the genital area (genital herpes). However, because of oral sex or oro-genital sex then either HSV-I and HSV-II can about the area around the mouth or genitals. Forms of HSV attack on an individual can be a primary infection, non primary first episode, recurrent and asymptomatic.
The incidence of herpes simplex infection increases every year. Data in the United States said that found 1.5 million new cases are caused by HSV transmission through sexual intercourse, in which a woman infected with HSV can transmit to a partner by 4-5%, but if the man who infected the chances of transmitting HSV the spouse of 8-10%. HSV infection in neonates due to vertical transmission from mother to reach 1500-2000 new cases each year.
An individual may be exposed to HSV infection because of transmission from a seropositive individual, where transmission can take place both horizontally and vertically. The difference of the two transmission methods are as follows:

Herpes Simplex Test

Test for Herpes Simplex Virus (HSV) infection can be performed virology and serology, each instance of the investigation are as follows: 
Virology
  1. Light microscope. Samples derived from cells at the base of the lesion, smears on the mucosal surface, or from a biopsy, may be found in internuclear inclusions (Lipschutz inclusion bodies). Infected cells may show an enlarged cells resembling balloons (ballooning) and found fusion. In the experiment Tzanck with Giemsa or Wright staining, can be found in many core datia cells and inclusion bodies intra nuclear.
  2. Examination direct antigen (immunofluorescence). Cells of the specimens included in the frozen acetone. Then the examination is done by using light electrons (90% sensitivity, 90% specific) but, this examination can not be matched with viral culture.
  3. PCR, polymer chain reaction test for HSV DNA is more sensitive than traditional viral culture (sensitivity> 95%, compared with a culture that only 75%). But its use in the diagnosis of HSV infection has not been conducted on a regular basis, most likely because the cost is expensive. This test is commonly used to diagnose HSV encephalitis because the results are faster than culture virus.6
  4. The virus culture, viral culture of vesicle fluid in the lesion (+) for HSV is the best way because the most sensitive and specific than other methods. HSV can develop within 2 to 3 days. If the test is (+), almost 100% accurate, especially if the fluid comes from the primary vesicles rather than vesicles recurrence. Growth of virus in the cell indicated by the occurrence of cytoplasmic granulation, balloon degeneration and giant cell core a lot. Since the virus is difficult to develop, test results often (-). However, this method has the disadvantage due to a long examination time and expensive.
Serology

Herpes Simplex Causes, Distribution and Incubation

Herpes Simplex Etiology
Causes Herpes simplex virus infection are included in the family herpesviridae, subfamily alphaherpesvirinae. HSV type 1 and type 2 can be distinguished immunologically (especially if you used a specific antibody or monoclonal antibody). And HSV type 1 and type 2 is also different when viewed from the growth pattern of the virus in cell culture, eggs and embryos in experimental animals.
Herpes Simplex Distribution
Scattered throughout the world. Hamapir 50% -90% of adults have antibodies to HSV 1. Initial infection of HSV 1 usually occurs before age 5 years, but now many primary infections are found occur in adults. Infection with HSV-2 usually starts because of sexual activity and rarely occur before adulthood, except in case of sexually abused children. HSV-2 antibody was found about 20% -30% of American adults. Prevalence of antibodies to HSV-2 increased (more than 60%) in lower socioeconomic groups and in people who have multiple sexual partners.
Reservoir - Humans serve as reservoirs.
Herpes Simplex Transmission

Herpes Simplex Fact

Herpes simplex is a viral infection characterized by localized primary lesion, latency and the tendency for recurrence. There are 2 types of virus - the herpes simplex virus (HSV) types 1 and 2 in general lead to different clinical symptoms, depending on the entry road. Can attack the means of genital or oral mucosa. Primary infection with HSV-1 may be mild with no symptoms, occurred in early childhood.
Approximately 10% of primary infection, emerged as a disease with a diverse spectrum of clinical symptoms, characterized by hot and malaise to 1 week or more, may be accompanied by severe gingivostomatitis followed by a vesicular lesions on the oropharynx, severe keratoconjunctivitis, and accompanied by the emergence of symptoms and complications of chronic eczema-like skin, meningoencephalitis or some fatal infection that occurs in newborns (congenital herpes simplex, ICD-9 771.2, ICD-10 P35.2).

Herpes Simplex Info

Herpes is a viral infection of the skin. Herpes simplex virus is a herpes virus that causes disease in humans. Noted there are seven types of viruses that can cause disease in humans are herpes Herpes Simplex Virus, Varizolla Zoster Virus (VZV), cytomegalovirus (CMV), Epstein-Barr Virus (EBV), and Human Herpes Virus type 6 (HHV-6), type 7 (HHV-7), type 8 (HHV-8). All herpes viruses have the same size and morphology and everything to replicate in the cell nucleus.

Herpes Virus Simplex Type 1 and Type 2

The type 1 and type 2 herpes simplex viruses can cause severe genital infection. When someone first gets genital herpes, it is impossible to tell from the signs and symptoms whether the infection is due to the type 1 or the type 2 virus. There is, however, a marked difference in the incidence and frequency of recurrent genital infections caused by these two viruses. The type 1 virus is sometimes viewed as the better of the two, because many people with primary genital type 1 infection never have recurrent infections, and those who do generally have only occasional outbreaks.