- An analysis of millions of coronavirus test results in Denmark suggests that natural infection with SARS-CoV-2 protects against reinfection in most people.
- But this protection is significantly weaker in those aged 65 years or older.
- Steen Ethelberg and his colleagues at the Statens Serum Institut in Copenhagen mined data from polymerase chain reaction tests.
- These are the gold-standard method for detecting SARS-CoV-2 infection, conducted in Denmark (C. H. Hansen et al. Lancet https://doi.org/gj...
https://mfame.guru/older-people-vulnerable-of-getting-covid-19-twice/