-- Robert Preidt
THURSDAY, Jan. 24 (HealthDay News) -- A new study finds that
vaccinating children against rotavirus may also help protect
unvaccinated adults against the highly contagious virus that causes
severe diarrhea and vomiting.
Before vaccination was introduced, rotavirus caused 2.4 million
hospitalizations and more than 450,000 deaths in infants and
children globally each year. After vaccination was introduced in
the United States, declines in rotavirus infection were seen in
both vaccinated and unvaccinated children.
This study examined whether the vaccine's benefits also extend
to unvaccinated adults. The researchers compared the prevalence of
rotavirus in stool samples collected from 3,500 adults in 2006 and
2007 -- before widespread implementation of rotavirus vaccination
in children -- and in samples collected from 2008 to 2010.
There were nearly 50 percent fewer unvaccinated adults with
rotavirus in the second round of samples, according to the study,
which was published online Jan. 24 in the journal
Clinical Infectious Diseases.
Significant declines were seen in both adults admitted to the
hospital and those treated as outpatients.
Previous research estimated that adult inpatient hospital
charges related to rotavirus are $152 million a year in the United
States. These new findings suggest that vaccinating children
against rotavirus may be "much more cost effective than previously
believed," study author Dr. Evan Anderson, of Emory University in
Atlanta, said in a journal news release.
"Vaccinating children may protect adults from rotavirus by decreasing the amount of rotavirus circulating in the community," Anderson said.
The findings highlight the need to support and encourage
vaccination, he added. "By improving the health of children, we
indirectly improve the health of adults," he said.
The U.S. Centers for Disease Control and Prevention has more
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