Table 1

Definitions of infectious episodes in infancy

InfectionCriteria for diagnosis, comments
Acute otitis media (AOM)Compatible clinical presentation (presence of fever, restlessness, irritability/lethargy or otorrhoea) and confirmation of AOM by a physician17
Acute lower respiratory tract infectionBased on both clinical presentation and diagnosis by a physician (pneumonia, bronchiolitis and croup)8
Acute upper respiratory tract infectionAt least one of the following (after excluding infants with AOM or lower respiratory tract infection): (i) presence of at least two of the following symptoms for at least 2 days: axillary temperature ≥38.0°C, rhinorrhoea, cough or fast breathing; or (ii) compatible physician diagnosis8
GastroenteritisAt least one of the following: (i) presence of at least two of the following symptoms for at least 2 days: axillary temperature ≥38.0°C, increased frequency of stools, loose stools or vomiting; or (ii) physician diagnosis of gastroenteritis.8 Particular attention was given to distinguishing vomiting from regurgitation
Urinary tract infectionBased both on diagnosis by a physician and appropriate culture.18 In the study area, infantile circumcision is extremely rare
ThrushCompatible clinical manifestations and confirmation by a physician
ConjunctivitisCompatible clinical manifestations and confirmation by a physician