Keeping Up to Date on Hepatitis Viruses, Vaccines

Daily Herald (Arlington Heights, IL), July 30, 2012 | Go to article overview

Keeping Up to Date on Hepatitis Viruses, Vaccines


The two boys had just finished their checkups and little sister was going last, as usual. Not to be outdone by her two older brothers, the 6-year-old brushed off all offers of help and leapt up to the exam table with the grace of an Olympic gymnast.

Though big brothers went first, it was their younger sibling who was a step ahead on that particular day. As a toddler, the girl had been given two hepatitis A shots as part of the revised vaccination schedule introduced in 2007.

Her brothers, who were 8 and 9, had not yet received the hepatitis A injections. Their parents thought that it made sense for the boys to play immunization "catch-up" with their little sister, so that all three of their children would be protected against this contagious disease.

Hepatitis A is a virus known to infect the liver, and infection can result in a monthlong illness featuring fever, vomiting and diarrhea, dark urine, clay-colored stools and jaundice. Deaths are rare, according to data from the American Academy of Pediatrics, with a hepatitis A case fatality rate of .01 percent to 2 percent.

While vaccines have not yet been developed for the rest of the "alphabet" of infectious hepatitis, it is fortunate that safe and effective vaccinations are available against both the hepatitis A and hepatitis B viruses.

The first inactivated hepatitis A vaccine was licensed for use in 1995. Childhood vaccination was initially aimed at protecting kids who lived in areas of the country with the highest rates of hepatitis A disease.

The two-dose hepatitis A series was then "rolled out" to other high risk populations, and in a 2007 policy statement, the AAP began recommended routine hepatitis A vaccinations for all children aged 12 to 23 months living in all 50 states.

The AAP estimates that there were approximately 300,000 cases of hepatitis A infections per year in the United States prior to vaccine licensure. By 2003, hepatitis A disease rates were already 76 percent lower than rates seen during the pre-vaccine years.

Academy experts explain that the hepatitis A virus is passed person-to-person through the fecal-oral route, and only rarely transmitted through contaminated blood products.

Hepatitis A can also be acquired after eating uncooked foods, such as salads and sandwiches prepared by infected food handlers, consuming produce tainted during the growing or processing stages, or, infrequently in developed countries such as the U. …

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