Hepatitis A is one of the most common vaccine-preventable infectious diseases in the world. Effective vaccines against hepatitis A have been available since 1992, and they provide long-term immunity against the infection. However, there is no worldwide consensus on how long protection will last ...
How effective is the hepatitis B vaccine? How long does a distemper vaccine last? How long after being administered is the typhoid vaccine effective for? How long is the pertussis vaccine good for? How long after being administered is the Tdap vaccine effective? How long does the shingles vacc...
There are safe and effective vaccines that can prevent hepatitis A and B (but not cause types C, D, or E). There is also a combination vaccine that guards against A and B. Who Should Get the Hepatitis A Vaccine? The CDC recommends that all children between ages 12 months and 23 month...
The number of cases of hepatitis A in the United States varies among different communities and has been reduced by the introduction of the hepatitis A vaccine. The rate of infection (number of infections per 100,000 people) has declined since 1999. Vaccination at age 1 year may cause the ra...
Hepatitis B vaccine is indicated foractive immunizationagainst HBV infection caused by all known subtypes in non-immune subjects. The most commonly encountered risk factors for travel-related hepatitis B are long-term travel, casual sexual activity with a new partner, potential for medical anddental ...
A safe, effective multidose hepatitis A vaccine is available in the United States and is recommended for individuals at high risk for exposure to HAV infection, such as persons involved with the care of nonhuman primates used in experimental HAV infection studies. Passive protection of such pers...
Ultimately, in 1980, evidence was provided for a remarkable 93% efficacy of an inactivated hepatitis B (HB) vaccine in preventing HBV infection among homosexual men [14]. In particular, it was found that none of the vaccinees with a detectable immune response to the vaccine had clinical ...
Even though not precisely determined, a vaccine study suggests that the minimum protective concentration of antibodies is 2.5 World Health Organization (WHO) units/mL [42,43]. The main limit of this investigation is that we were unable to obtain the sequences of the HEV detected in the water...
A Parents’ Guide to Vaccines for Children Before Use Hepatitis B vaccines are considered safe but should not be used in people who have had an allergic reaction to a previous dose of the vaccine or any of the components of the vaccine. This includes people with a severeyeast allergy, as ...
Houghton, also the Li Ka Shing Chair in Virology at the University of Alberta, says the vaccine, developed from a single strain, has shown to be effective against all known strains of the virus. It took more than 10 years to develop and started while he was working for the drug company...