An adverse reaction that appears after vaccination (or similar interventions), such as fever, fatigue, or injection-site pain; a medical term.
予防接種の後、軽い副反応が出ることがある。
Mild side effects may occur after vaccination.
副反応として腕の痛みや発熱が報告されている。
Arm pain and fever have been reported as side effects.
重い副反応はまれだが、異常を感じたら受診したほうがいい。
Serious side effects are rare, but you should see a doctor if you notice anything unusual.
A side reaction in chemistry that occurs alongside the main reaction, producing by-products and potentially lowering yield.
この条件では副反応が多く、目的の生成物の収率が下がる。
Under these conditions side reactions are common, reducing the yield of the desired product.
触媒を変えると副反応が抑えられる場合がある。
Changing the catalyst can sometimes suppress side reactions.