Immunity to the coronavirus lasts at least a year, probably much longer, and improves over time especially after vaccination, according to two new studies. The findings may help put to rest lingering fears that protection against the virus will be…
Covid reinfection: Man gets Covid twice and second hit ‘more severe’
A man in the United States has caught Covid twice, with the second infection becoming far more dangerous than the first, doctors report. The 25-year-old needed hospital treatment after his lungs could not get enough oxygen into his body. Reinfections…