RE: Bermuda16 Jul 2020 23:09
In work conducted in the lab of Chuan Qin, Peking Union Medical College, Beijing, China, six macaques were exposed to SARS-CoV-2. Following infection, the animals developed mild-to-moderate illness, including pneumonia and evidence of active infection in their respiratory and gastrointestinal tracts. Twenty-eight days later, when the macaques had cleared the infection and started recovering, four animals were re-exposed to the same strain of SARS-CoV-2. The other two served as controls, with researchers monitoring their continued recovery.
note the word exposed ...
another one
https://directorsblog.nih.gov/2020/07/14/study-in-primates-finds-acquired-immunity-prevents-covid-19-reinfections/
Methods: Three 3-5 years old and two 15 years old rhesus macaques were intratracheally infected with SARS-CoV-2, and then analyzed by clinical signs, viral replication, chest X-ray, histopathological changes and immune response.
https://pubmed.ncbi.nlm.nih.gov/32318665/