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Table 2 Pneumonia surveillance case definitions

From: Evaluation of a phased pneumococcal conjugate vaccine introduction in Mongolia using enhanced pneumonia surveillance and community carriage surveys: a study protocol for a prospective observational study and lessons learned

Surveillance case definition in use in the WHO-supported system

Revised case definition introduced at commencement of enhanced system

Any child aged 2–59 months admitted to a hospital conducting surveillance, demonstrating:

A child (aged 2–59 months) is eligible for surveillance if they meet any one of the following:

cough OR difficulty breathing

AND EITHER

displaying fast breathing when calm (as defined by age):

• > = 50 breaths per minute in infants aged 2–12 months

• > = 40 breaths per minute in children aged 1–4 years

cough OR difficulty breathing,

AND

respiratory rate > =50 bpm (all ages),

OR

oxygen saturation < 90%

OR

with a clinical diagnosis of severe pneumonia (based on the presence of chest indrawing, stridor, or a danger sign [inability to feed, vomiting everything, convulsions, prostration/lethargy]).

OR

with a clinical diagnosis of severe pneumonia