Double infection happens when an individual is infected with two variants of the same pathogen at the same time. It is caused when multiple persons infect a single person during a particular period. It is rare because the infection is not transmitted at every instance of interaction between people. Also, in most cases, the evidence of double infection is hard to detect because of miniscule differences in genome sequences.
A 90-year-old Belgian woman was the first recorded case of a person being infected with two different variants of SARS-CoV-2 virus. She carried both the Alpha and Beta variants, which originated from the UK and South Africa respectively. She died five days after the hospitalisation.
Written by IAS POINT