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Divergent female-male mortality ratios associated with different routine vaccinations among female-male twin pairs

2004; Oxford University Press; Volume: 33; Issue: 2 Linguagem: Inglês

10.1093/ije/dyh004

1464-3685

Peter Aaby,

COVID-19 epidemiological studies

Background Observational studies have suggested that vaccinations have non-specific effects that differ by sex. In the absence of randomized trials, studies of female–male twin pairs would allow us to investigate whether an intervention had sex-specific effects on survival. We therefore examined mortality patterns among female–male twin pairs according to vaccination status.