By MARILYNN MARCHIONE AP Chief Medical Writer Two new studies give encouraging evidence that having COVID-19 may offer some protection against future infections. Researchers found that people who made antibodies to the coronavirus were much less likely to test positive again for up to six months and maybe longer. The results bode well for vaccines, which provoke the immune system to make antibodies — substances that attach to a virus and help it be eliminated. Researchers found that people with antibodies from natural infections were 'at much lower risk … on the order of the same kind of protection you'd […]

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