Home Health News Fever, symptom screening misses many coronavirus cases

Fever, symptom screening misses many coronavirus cases

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Temperature and COVID-19 symptom checks like those used at colleges and physician’s places of work have once more proved insufficient for recognizing coronavirus infections and stopping outbreaks.

A research of Marine recruits discovered that regardless of these measures and strict quarantines earlier than they started training, the recruits unfold the virus to others regardless that hardly any of them had signs. None of the infections had been caught by means of symptom screening.

The research, revealed Wednesday within the New England Journal of Medicine, has implications for faculties, prisons, meatpacking crops and different locations that depend on this type of screening to detect infections and forestall outbreaks.


“We spent a lot of time putting measures like that in place and they’re probably not worth the time as we had hoped,” mentioned Jodie Guest, a public health researcher at Atlanta’s Emory University who had no position within the analysis.

“Routine testing seems to be better in this age group” as a result of youthful adults usually don’t have any signs, she mentioned.

The research was led by researchers from the Icahn School of Medicine at Mount Sinai in New York and the Naval Medical Research Center.

It concerned 1,848 Marine recruits, about 90% of them males, who had been instructed to isolate themselves for 2 weeks at house, then in a supervised army quarantine at a closed school campus, The Citadel in Charleston, South Carolina, for 2 extra weeks. That included having a single roommate, sporting masks, preserving a minimum of 6 ft aside and doing most training outside. They additionally had each day fever and symptom checks.


The recruits had been examined for coronavirus once they arrived for the army quarantine and 7 and 14 days afterward. Sixteen, or about 1%, examined optimistic on arrival and just one had any signs. Another 35 — an extra 2% — examined optimistic through the two-week army quarantine and solely 4 had signs.

Only recruits who examined adverse on the finish of each quarantine durations had been allowed to go on to Parris Island for fundamental training.

Genetic testing revealed six separate clusters of cases among the many recruits.

“A lot of the infection that occurs, we don’t even realize it is occurring,” mentioned one research chief, Navy Cmdr. Andrew Letizia, a health care provider on the Naval Medical Research Center.

The quarantine measures and adherence to them had been way more strict than what would happen at a typical school campus, mentioned one other research chief, Mount Sinai’s Dr. Stuart Sealfon.

“This is a really infectious virus. You really need to use a combination of good public health measures, temperature checks, mask wearing, social distancing, hand washing … and comprehensive testing” to stop unfold, he mentioned.


Previously, federal officers mentioned a screening project to verify temperatures and signs at U.S. airports caught fewer than 15 cases out of 675,000 vacationers. It’s not recognized how many cases had been missed, simply that only a few had been detected.

A separate research revealed Wednesday within the New England journal studies on an outbreak final spring on the plane provider USS Theodore Roosevelt. Among the crew of 4,779, largely younger folks, 1,271 turned contaminated; 77% didn’t present signs when identified and 55% by no means developed any.

The case exhibits that “young, healthy persons can contribute to community spread of infection, often silently,” Dr. Nelson Michael of the Walter Reed Army Institute of Research wrote in a commentary.

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