Potential Cause For Mysterious Outbreak Of Child Paralysis Identified In The US

by Lakshmi Darshini on  July 17, 2015 at 2:36 PM Child Health News
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Enterovirus D68 may not be the reason for the strange outbreak of child paralysis for there maybe another cause, said the doctors at the University of Virginia Children's Hospital. They were able to conclude this after testing a stricken child to be suffering from a different virus.
Potential Cause For Mysterious Outbreak Of Child Paralysis Identified In The US
Potential Cause For Mysterious Outbreak Of Child Paralysis Identified In The US

A 6-year-old girl arrived at UVA Children's Hospital in October after her parents noticed that her right shoulder was drooping and that she was having difficulty using her right hand. She had previously exhibited cold-like symptoms, including a cough, a slight fever and headache. The child's paralysis symptoms were similar to those seen in more than 100 other children during an outbreak of acute flaccid myelitis that began in the summer of 2014.

While enterovirus D68 has been the primary suspect in the paralysis cases, the girl's test results identified a different potential culprit, enterovirus C105. "Surprisingly, it came back with this enterovirus C105, which I'll admit, when it came back, I'd never heard of," said UVA's Ronald B. Turner. "It was just described in the last eight or nine years and it hasn't been seen much around the world. Now, I think you have to be careful with that, because we don't look for it. And you don't see what you don't look for. So it's possible it's out there and it's not being detected because nobody's sending specimens to be tested in this way."

While Turner has published a case study detailing the girl's diagnosis, he stops short of suggesting that enterovirus C105 is responsible for the paralysis outbreak. "You can only learn so much from one case. My plea is that we not over-interpret this information," he said. "It was really just an attempt to say, 'Hey wait a minute, there are other possibilities for what's going on with this flaccid paralysis and we need to keep an open mind about this.'"

In the case study, Turner and his co-authors note that while many of the 118 children affected by the paralysis outbreak had also exhibited cold-like symptoms, enterovirus D68 was detected in only eight of the 41 children tested for it. Turner suggests that the outbreak of enterovirus D68 at the same time as the paralysis outbreak may have been a misleading coincidence.

"Last fall there was this outbreak of enterovirus D68 disease that was going around the country and mostly causing respiratory symptoms, asthma exacerbations. Right in the middle of that, there was also an outbreak of acute flaccid paralysis," Turner said.

"Because of the temporal relationship, a lot of people connected those two events and assumed that the enterovirus D68 was somehow related to the acute flaccid paralysis. "He emphasized that enterovirus C105 may also not be the cause of the paralysis, and that more analysis needs to be done as the federal Centers for Disease Control and Prevention gathers information. "It's really more a caution than an answer we're providing, in my opinion."

UVA's case study has been published online by the journal Emerging Infectious Diseases.

The 6-year-old girl seen at UVA has been doing well, Turner's case study reports. Her right arm weakness has improved and the strength in her right hand has returned.

Source: Eurekalert

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