" infection of SARS‐CoV has been reported in the brains " I saw something maybe here about the brain stem being infected.
Coronavirus: 15 Italian tourists test positive in India, confirmed cases rise to 21
So the tourist carried the virus to India from Italy as a gruop
Or maybe one person had the virus on the flight to India and the rest caught it.
Italy must have a huge infected population. Every new case in the world has been related to Italy.
Link to India article