Usefulness of diverse serological tests in the laboratory diagnosis of fever with skin-rash cases in children

•300-fever with skin rash cases (suspected measles) were tested in four serological tests.•Altogether, 42%, 86% and 97.3% cases showed MeV IgM, IgG and Nt antibodies, respectively.•For rubella virus, 22.7%, 59.3% and 72.3% cases showed IgM, IgG and Nt antibodies, respectively.•Acute cases confirmed by low IgG antibody avidity was 37.2% for measles and 23.9% for rubella.•Overall, 60.6% cases were laboratory confirmed except 39.3% non-measles and non-rubella cases.