coronavirus patients and healthcare workers at Guy’s and St Thomas’ NHS Trust in London. Analysis showed that a "potent" level of antibodies could be found in 60 per cent of the patients at the peak of their illness.But only 17 per cent sustained that same level of potency three months later, according to blood tests.In some cases, antibodies had depleted entirely in that time, the research showed.The report states that its findings have “important implications when considering widespread (antibody) testing, (antibody) protection against re-infection with (Covid 19) and the durability of vaccine protection.”It added: “Further studies using sequential samples from these individuals is required to fully determine the longevity of the.