4 February 2023

Enterovirus Infections Difficult to Track

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In July and early August, doctors at Children's Healthcare of Atlanta diagnosed 15 to 20 children a week with serious respiratory infections -- a normal number for the summer months. Then, pediatricians started to see more children who were having trouble breathing, more parents with worried looks on their faces.

More than 10 states around the Midwest and Southeast have reported seeing similarly high numbers of hospitalizations for children with severe respiratory illnesses. The virus has sent more than 30 children a day to a Kansas City, Missouri, hospital, where about 15% of the youngsters were placed in intensive care, health officials said.

Doctors say they think the increase is due to a bug called Enterovirus D68, an uncommon type of enterovirus that seems to be exacerbating breathing problems in children with asthma. But nailing down the culprit, and tracking the number of cases, is easier said than done.

Children's Healthcare, like most hospitals around the nation, tests samples from children with respiratory illnesses to determine if they have a viral infection. But the tests don't distinguish between the rhinovirus, which is the most common cause of the common cold, and enteroviruses, which can cause a variety of symptoms.

Once hospitals noticed this upward trend in severe respiratory illness cases, they requested help from the Centers for Disease Control and Prevention in identifying the specific virus at fault. Children's Healthcare of Atlanta is working with the Georgia Department of Public Health to submit specimens to the CDC, which is already testing samples from states like Alabama, Utah and Michigan.

The problem is that there are more than 60 enteroviruses that are known to infect humans, according to the CDC; these viruses cause an estimated 10 million to 15 million illnesses each year. Symptoms can range from the sniffles to stomach issues to a severe respiratory infection.

The average healthy adult gets two to three colds a year, the CDC says; children usually get more. They're more at risk because their immune systems haven't had a chance to build up immunity to these common viral infections.

The CDC doesn't require state health departments to track these types of infections, since they are usually dealt with at home and patients recover with a little TLC. So getting a firm count of the number of people infected -- or what other states may be at risk -- for EV-D68 is difficult.

Click here to access the full article on CNNHealth.
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