Should visits to relatives carry a health warning?
McCarthy
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D000293:Adolescent; D000328:Adult; D002170:Canada; D002648:Child; D002675:Child, Preschool; D006525:Hepatitis, Viral, Human / Q000517:prevention & control; D006801:Humans; D008288:Malaria / Q000517:prevention & control; D012307:Risk Factors; D014195:Travel / Q000706:statistics & numerical data*; D014330:Tropical Medicine / Q000706:statistics & numerical data / Q000639:trends