Evening Business Attire for Women By Meka Jones Women who work in the world of business know how important it is to look professional at the office or at networking events.
Hepatitis A vaccine is a vaccine against the hepatitis A virus. The first successful vaccine against it was invented by Maurice Hilleman at Merck. The vaccine protects against the virus in more than 95% of cases and provides protection from the virus for at least fifteen years.There are two types of vaccines: one type contains inactivated hepatitis A virus, the other contains a live but attenuated virus.he vaccine protects against the virus in more than 95% of cases and provides protection from the virus for at least fifteen years. There are two types of vaccines: one type contains inactivated hepatitis A virus, the other contains a live but attenuated virus.
Oral polio vaccines were developed by several groups, one of which was led by Albert Sabin. Other groups, led by Hilary Koprowski and H.R. Cox, developed their own attenuated vaccine strains. In 1958, the National Institutes of Health created a special committee on live polio vaccines.