Russian doctor intentionally reinfected himself to test coronavirus immunity

A doctor from Siberia conducted a controversial coronavirus immunity test after surviving COVID-19 in March. The 68-year-old Russian doctor spent time with coronavirus-positive patients without wearing a mask to see if he could get a second COVID-19 infection. The doctor was infected a second time after about six months and experienced a worse COVID-19 case than he had previously. A doctor in Russia spent time with coronavirus patients without wearing a mask and repeated the experiment for month...