Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews · Acute Respiratory Infections

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 50%Moderate 1 · 50%High 0 · 0%

Cohort studies ‐ > 2 weeks after MMR vaccination · children 9 months to 15 years old

The intervention showed no clear difference in cohort studies ‐ > 2 weeks after MMR vaccination (low certainty).

1 finding from 1 review

Vaccines for measles, mumps, rubella, and varicella in children 2021 · Cochrane Headline outcomes only
Rate ratio 0.97 [0.49, 1.94]
1 study · 1018998 participants
Low

Cohort studies ‐ between 1 and 2 weeks after MMR vaccination · children 9 months to 15 years old

The intervention probably leads to higher cohort studies ‐ between 1 and 2 weeks after MMR vaccination (moderate certainty).

1 finding from 1 review

Vaccines for measles, mumps, rubella, and varicella in children 2021 · Cochrane Headline outcomes only
Rate ratio 3.16 [2.89, 3.46]
2 studies · 2147638 participants
Moderate