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“On the basis of the severity of the clinical presentation of some cases in this study, the (adenovirus) vaccine currently licensed for military use should be considered a potentially valuable resource to prevent disease in susceptible populations living in closed communities, such as college settings, summer camps, and long term care facilities,” they wrote in a report published this week in the journal Emerging Infectious Diseases.
An outbreak of adenovirus killed 10 people in 2007. Kajon’s team tested college students at one campus during the severe 2014 2015 influenza epidemic and found 13 out of 168 students who came in for flu treatment had adenovirus infections.
Most patients may not suffer much, but the virus can cause very severe complications. Kajon and colleagues described the case of a 43 year old Rochester, New York woman, previously healthy, who became infected in 2012 and quickly developed pneumonia and respiratory failure. During her hospital stay she suffered brain swelling and bleeding and stayed on a ventilator for more than amonth.
A year later, she was still out of breath if she exerted herself.
There was also the case of a 26 year old Connecticut man infected in 2011 who had nausea, vomiting and chills. He spent days in the hospital with adenovirus infection.
There have been outbreaks in long term care faciltiies, also. But most clinics don’t test for adenovirus unless people are hospitalized with severe illness that isn’t helped by immediate treatment, Kajon said.
“These reports are probably the tip of the iceberg. We need more surveillance,” she said.
The Centers for Disease Control and Prevention keeps a log of reported cases of adenovirus.
“Outbreaks are more common in late winter, spring, and early summer but can occur throughout the year,” the CDC said.
There were so many outbreaks among new military recruits that the Department of Defense vaccinates personnel against two of the more serious strains with an oral vaccine. Vaccination was stopped for a few years in 1999 and outbreaks soared again, but there haven’t been many since the vaccine was re introduced in 2011, the CDC said.
Kajon believes it should be more widely available,
“This is a vaccine preventable disease,” she said. “A life is a life. Losing a loved one to viral pneumonia when you know it could have been prevented is hard.”
Adenovirus is not the killer that influenza is. Influenza kills between 12,000 and 50,000 people a year in the United States alone, and puts up to 700,000 in the hospital. But Kajon said her studies show adenovirus can be a significant part of the mix.
As with many viruses, there’s not a good treatment for adenovirus, although the antiviral cidofovir has helped some people with severe infections.
And adenoviruses are very hard to kill. Reports indicate they can survive on plastic and metal surfaces think countertops and hospital tables for a month. Some formulations of alcohol and chlorhexidine do not kill them easily, tests have shown, although chlorine does.