- Change of antibiotic: due to persistent vomiting (vomiting of amoxycillin within 20 minutes of administration; 3 such attempts), or, developing a co-morbid condition, or persisting fever > 98.6°F with lower chest indrawing even after 3rd day, or, fever alone at or after day 5, or, lower chest indrawing alone (non responsive to three doses of nebulization with bronchodilator) at or after day 5(as reported by the mother), or, persistence of fast breathing after day 7 which is non responsive to three doses of nebulisation with bronchodilator.