According to the news of March 28th, Mask just said in twitter that he might have been infected with COVID-19, but there were hardly any symptoms.
"Covid-19 is the virus of Theseus (the legendary king of Athens). How many genetic changes will it go through before it is no longer covid-19? I seem to have the disease again (sigh), but there are few symptoms," Musk said
This website learned that novel coronavirus pneumonia was infected by musk in November 2020 after visiting Sweden. At that time, musk said that he used the same machine to conduct four rapid antigen tests. The results showed that he tested positive twice and negative twice on the same day. The symptom was a slight cold. Previously, Mask had shown disdain for COVID-19, and even said he and his child would not vaccinate.