Bell's palsy is a condition that causes a temporary paralysis of the muscles in the face. It can occur when the nerve that controls your facial muscles becomes inflamed, swollen, or compressed.

The man was said to be suffering from hypertension. He received the jab last Saturday at around 1pm at the vaccination center at the Hong Kong Central Library in Causeway Bay.

Two hours after inoculation, the man was said to have fallen ill, noticing inability to close her left eye completely, while he is also drooling from the left side of his mouth. On the next morning, his left eye was said to lack tear production, resulting in a dry eye.

Health officials said the vaccine panel will look into the case next Monday and will announce the results on the same day, to see if the Covid jab was related to the incident.