maybe in your place the vaccine used is called astrazeneca. indeed as far as I know many people get sick after receiving this type of vaccine. if in your place using a vaccine called sinovac, the number of sick people may be much less. but you don't have to worry too much because the pain caused by the vaccine is a mild illness and you will recover quickly.
LOL.. no one want to use Sinovac because it is completely useless. Here in India, I got vaccinated with the AstraZeneca vaccine (Covishield). After the first dose, I suffered from light fever, but there were no side effects after the second dose. And the AstraZeneca vaccine is having good efficacy (60%-80% according to various studies). On the other hand, those nations which used Sinovac are opting for 3rd booster dose with other vaccines. Because a lot of people who received two doses of Sinovac have contracted COVID 19 and died.
sinovac is the first vaccine available in my country, even this type of vaccine is widely used by officials in my country. indeed the effectiveness of the Sinovac vaccine is below that of Arstrazeneca, but this effectiveness cannot be known if mass vaccination is not carried out.