Remember “Herd Immunity”?
A study in Spain indicated people’s immunity to coronavirus wanes after just a few weeks. The study found that 7% of participants who had antibodies in the first phase no longer showed them by the second phase, and that about 14% who had them in the first phase had lost them by the third phase, although this final figure requires more study, the Health Ministry said in a statement Monday. This means that any perceived immunity “can be incomplete, transitory and then disappear,” Dr. Raquel Yotti, head of the Carlos III Health Institute, a key government agency leading the study, said in a news conference on Monday.