variants infect one person simultaneously or within a very short period of time. It occurs when someone gets infected with one variant, but gets re-infected with another variant within 2-3 days of the first infection and before antibodies could develop," Dr BJ Borkakoti said.
The Dibrugarh's Regional Medical Research Centre detected the double infection in the woman doctor in early May. A month after receiving the second dose, the woman and her husband, both doctors at a COVID Care Centre, tested COVID-19 positive and the latter was infected with the Alpha variant, Dr Borkakoti added. "We collected their samples again and the second round of tests re-confirmed the double infection in her.