Sentences with phrase «severe vaccine side effects»

Not exact matches

Though many early vaccines worked well, side effects were always a concern, sometimes because the virus was still infectious, sometimes because proteins were present that triggered severe immune reactions.

Research has shown that side effects and adverse reactions are more common, and more severe, when vaccines against several diseases are given at the same time, so it makes sense to minimize this as much as possible.

Because, says Cornell, the potential damage posed by Lyme — including severe arthritic - like symptoms and rarely renal failure — outweighs the minimal odds of vaccine side effects.

Plus, the disease itself is usually not severe, and the vaccine has a relatively high incidence of side effects.

The FIP virus vaccine has generally been found ineffective and has produced severe side effects.