The News And Times

5:19 PM 2/1/2021 New study finds reinfection by SARS-CoV-2 in healthy young adults is common Monday February 1 st , 2021  at  5:18 PM Newswise: SciNews 1 Share MEDIA ADVISORY Paper title :  SARS-CoV-2 seropositivity and subsequent infection risk in healthy young adults: a prospective cohort study Corresponding Author:   Stuart C. Sealfon, MD, Professor of Neurology, Neuroscience and Pharmacological Sciences, Icahn School of Medicine at Mount Sinai Bottom Line:  Although antibodies induced by infection to SARS-CoV-2 are largely protective, they do not guarantee effective immunity against subsequent infection, as evidenced through a longitudinal, prospective study of young Marine recruits. Previously infected study participants identified by seropositivity are susceptible to repeat infection, with nearly one-fifth the incidence rate of those without evidence of previous infection. Among the seropositive group, those who became infected again had lower antibody titers than those that were

4:13 PM 2/1/2021 Covid-19 Rates in India M.N.: My hypothesis and explanation:  1. Sars-Cov-2 was present in India, just like everywhere else, for quite some time, probably for decades if not longer. It was and is largely asymptomatic, and the populace developed the adequate immunity to it:  Quote:  Serological surveys – random testing for antibodies – show a majority of people in certain areas of India may have already been exposed to the coronavirus, without developing symptoms. Last week,  preliminary findings  from a fifth serological study of 28,000 people in India's capital showed that 56% of residents already have antibodies , though a final report has not yet been published. The numbers were higher in more crowded areas. Last summer,  another survey  by Mumbai's health department and a government think tank found that 57% of Mumbai slum-dwellers, and 16% of people in other areas, had antibodies suggesting prior exposure to the coronavirus. 2.  Bacteria and viruses compet