But such speculation needs to be tested  we cant just rely on an educated guess. Get CNN Health's weekly newsletter Sign up here to get The Results Are In with Dr. Sanjay Gupta every Tuesday from the CNN Health team. Prof Paul Morgan, the director of the Systems Immunity Research Institute at Cardiff University and a member of the British Society for Immunologys expert taskforce on immunology and Covid-19, said there were other reasons for optimism. The Indian researchers agreed that further studies using high antibody levels may find it to be more effective. As such, it is sometimes harvested from people who have recovered from a disease and transfused into patients who are fighting it.
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