ワクチンの安全性・・・safety of the vaccine
ーを心配する・・・be worried about / concerned about
コロナにかかるよりはマシ ・・・it is better than getting Covid
重症化する・・・ become severe
I’m getting third vaccinated today.
The side effects after the second were terrible.
I had a high fever, severe headaches and sore muscles on the shoulder.
I suffered from them for 3 days.
Then I’m really worried about the side effects after the third vaccination.
I’m concerned about the safety of the vaccine, but it’s better than getting Covid and becoming severe. So I will get vaccinated.