COVID-19 infection during a study in Singapore have had antibodies against the virus, although the researchers said it is not yet clear what level of protection this may offer.The findings from a study of 16 women released on Friday also found that most were mildy infected, while more severe reactions occurred in older women with a high body mass index - a trend that is mirrored in the general population.Also Read | Covid curve slumping across IndiaOf the five who had delivered their babies by the time the study was published, all had antibodies, according to the Singapore Obstetrics and Gynaecology Research Network.The number of antibodies in the babies varied, and was higher among those whose mothers' had been infected nearer to the time.