Reinfected Marines additionally had decrease ranges of antibodies from their preliminary bout, in contrast with Marines who did not get reinfected.
“Two-thirds of the 19 Marines who had been reinfected did not have measurable neutralizing antibodies,” Sealfon famous, suggesting that some individuals who get contaminated do not generate antibodies.
The excellent news: Having antibodies after an infection does shield you in opposition to reinfection. The dangerous information: Even in case you’ve had COVID, there stays a threat you will get it once more.
“That may not trigger issues for the affected person, and positively younger individuals — like these in our examine — are largely asymptomatic,” Sealfon stated. “However it actually can imply that there’s a threat that they will then transmit a brand new an infection to those that are extra susceptible.”
Meaning mask-wearing, social distancing and getting vaccinated will nonetheless be vital, no matter your prior an infection historical past.
“Vaccination to supply further safety continues to be warranted for many who’ve been contaminated,” Sealfon stated. “As a result of we all know that you simply actually increase your antibody response with vaccination, even when you have already got antibodies.”
However Dr. Sandro Cinti, a professor of infectious illness at Michigan Medication on the College of Michigan in Ann Arbor, stated it is best to not learn an excessive amount of into these findings.
“These are early outcomes, with a really small variety of sufferers,” he famous. “It’s a must to be very cautious decoding all of the COVID research which might be popping out now, a lot of which haven’t been peer-reviewed.”
Cinti stated a viral an infection usually does present safety from additional an infection.
“Is there the opportunity of reinfection with COVID? Perhaps,” he stated. “However none of those research reply that query wherever close to definitively. The one factor definitive is that we simply do not actually know.”
The U.S. Facilities for Illness Management recommends everybody 18 and older get vaccinated — whether or not or not they’ve had COVID, Cinti stated.
“It is sensible as a result of we all know the safety price with vaccination is about 95%, and we do not know what the safety price is for COVID sufferers,” he stated. “I believe it is also that top, however we do not know that.”