Covid-19 still have antibodies at least six months after infection, a new study involving more than 20,000 people showed.Some 88% of participants who tested positive for a previous infection retained antibodies for six months, according to the report by UK Biobank, a major biomedical database.
The number was 99% at three months.The results follow other, smaller studies that indicate a level of immunity following a natural infection for at least 6 months.