The hepatitis A virus can survive in sea water for a number of weeks - meaning these people could contract the disease if the local sea water has been contaminated.
According to the CDC, it takes less than a minute for E. coli to be inactivated if chlorine levels are adequate, about 16 minutes to control Hepatitis A virus, about 45 minutes to kill off the Giardia parasite and over 10 days for a Crypto parasite.
Since type A hepatitis is a virus, it cannot be treated with antibiotics, but it is rarely deadly, the health department said.
Cohen took the malaria surface protein used in Ballou's vaccine and fused it to a protein from the hepatitis B virus, creating a harmless particle that looked like a virus to the immune system.
Invited to China in 1977 to talk about his great discovery, a virus that caused hepatitis, and his greater invention, a vaccine to prevent it, he would slip out in the early mornings to run for hours through fields, farmyards or the just-stirring streets of Beijing.
Hepatitis C has been a particularly tough virus to target because it has proven very difficult to grow in the lab.
The 254-nanometer light kills the hardy waterborne polio virus, rotavirus (which causes vomiting, diarrhea and dehydration), the bacterium that causes cholera, the virus that gives rise to hepatitis A, and cysts of cryptosporidium (a nasty parasite).
Over 200 diners and workers at a New York eatery have been vaccinated for hepatitis A after an employee handling desserts revealed she had the virus.
During the past year, there was a frenzy to acquire drug assets aimed at the hepatitis C virus (HCV).
That is expected to be a big selling point to many patients with the hepatitis C virus who have until now foregone treatment.
It is a general antiviral agent that does not specifically target the hepatitis C virus at all.
FORBES: Why Aren't There AIDS-Style Cocktails for Hepatitis C?
The drug is a synthetic version of interferon gamma-1b, a distant cousin of the more famous virus fighter used against hepatitis and cancer.
Gemayel says that aside from the giveaway, Roche has a clear marketing message for the new treatment, which combats hepatitis C virus and the chronic liver disease it causes.
"These studies show that RSV is a 'hit and hide' virus, rather like HIV or some hepatitis viruses, " said Professor Peter Openshaw of Imperial College and one of those involved in the study.
BBC: RSV infects most babies within their first year of life
"There is a very small chance that some patients could have been exposed to the hepatitis B virus, the hepatitis C virus, or HIV, based on practices identified at the facility, " the congressional memo states.
Until researchers can come out with a potent enough antiviral combo to account for the massive numbers of mutations that hepatitis c virus can produce, interferon will remain part of hepatitis C treatments.
FORBES: Why Aren't There AIDS-Style Cocktails for Hepatitis C?
New York (CNN) -- More than 200 people received hepatitis A vaccinations over the weekend after learning that a Manhattan restaurant employee handling sweets was infected with the virus, according to the New York City Department of Health and Mental Hygiene.
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