Recently, the UK has started vaccine its people with Pfizer's Coronavirus vaccine, which becomes an extensive concern that has doubted the safety of the vaccine shots.

In the USA, as per the reports of FDA, four people whom the vaccine shots have given during the testing stage have developed Bell's Palsy. Prominently, it's a medical condition that causes one half of the face to droop.

US FDA stated that Bell's palsy cases that have been arising are those who have this issue in their background. Officials also said that Bell's Palsy usually gets resolved on its own. Plus, there is no clear evidence upon which to conclude a causal relationship at this time, but they also will keep a close observation on future cases.

Among those four people, one saw facial paralysis within just three days after they received the shot. Nevertheless, their face turned to normal after about 3 days. In another case, the person contracted Bell's palsy 9 days after the shot, and the other's face became weaker 37 and 48 days after vaccination, respectively.

Though now these people have recovered from the facial paralysis in 10 to 21 days, they, however, it is noticed that Bell's palsy comes on abruptly and looks dangerous like a stroke. The doctors are still trying to find what causes it. They also reported that it can strike at any age and can stay for weeks, but most of the time, it resolves on its own over a few weeks, that's why there isn't any precise treatment for it.

The first country to approve this COVID-19 vaccine(Pfizer/BioNTech), is the UK. With its regulator Medicines and Healthcare products Regulatory Agency (MHRA) giving a temporary authorization for its emergency use.