What is a symptom of severe pneumonia?

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) pp. 797-799, 405-407
E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 173-175
Practise the full MP CHO -2019 (Shift-1)
Attempt every question from this paper in a timed mock, then review the full solution for each one.