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 have 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 if you happen to’ve had COVID, there stays a threat you will get it once more.
“Which may not trigger issues for the affected person, and definitely younger individuals — like these in our research — are largely asymptomatic,” Sealfon mentioned. “Nevertheless it actually can imply that there’s a threat that they’ll then transmit a brand new an infection to those that are extra weak.”
Meaning mask-wearing, social distancing and getting vaccinated will nonetheless be necessary, no matter your prior an infection historical past.
“Vaccination to offer further safety remains to be warranted for many who’ve been contaminated,” Sealfon mentioned. “As a result of we all know that you just 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, mentioned 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. “You need to be very cautious decoding all of the COVID research which can be popping out now, lots of which haven’t been peer-reviewed.”
Cinti mentioned a viral an infection usually does present safety from additional an infection.
“Is there the potential of reinfection with COVID? Perhaps,” he mentioned. “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 mentioned.
“It is smart as a result of we all know the safety charge with vaccination is about 95%, and we do not know what the safety charge is for COVID sufferers,” he mentioned. “I think it is also that prime, however we do not know that.”