Testing for Covid at the time was sluggish and expensive and in limited supply. Hospitals across the city were beginning to overfill. So doctors at the hospital often ordered several tests for patients, trying to identify — or eliminate from suspicion — other possible infections.
At first, doctors worried more for these patients, whose immune systems were fighting two battles at once. But the research may offer an intriguing window into viral interference, when one virus suppresses the effects of another, and contribute to a growing body of evidence about how the phenomenon acts. Viruses can also enhance other infections and make people sicker, which has beenLearning more about the complex interactions among viruses within the same host could help researchers better understand the complex patterns of epidemics.
But these coinfections are rather interesting to researchers. When someone is infected with two viruses, there are three options for how it could play out. It’s a third option — which seems counterintuitive — that is perhaps most intriguing. If infections are closely spaced in time, it’s possible for one infection to block another, researchers say.
“It will create a state where your antiviral response is turned on for days to probably a week,” Foxman said.
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