Dryvax has serious adverse side-effects in about 1% to 2% of cases.

Comment: A possibly serious side-effect makes me "not satisfied" in the star ratings.

The others display lesser versions of these powers or with serious side-effects.

Retrospective surveillance of 40,961 children (12 years and under) found no serious side-effects.

Even where vaccine was available for many, it had serious side-effects.

Some serious side-effects of revving up the immune system were seen in some patients.

The pill can have some serious side-effects, but these aren't common.

In hospital Andrew suffered serious side-effects when he was given a drug to prevent infection.

The serious physical and psychological side-effects of cancer can last for many months, even years, after treatment has finished.

Two have suffered serious side-effects from the standard Parkinson's treatment.