Neonatal nasopharyngeal swabs	Group						X² P
Neonatal nasopharyngeal swabs	Severe		Moderate		Mild		X² P
Negative	9	81.8	23	100.0	40	100.0	11.77 0.003*
Positive	2	18.2	0	0.0	0	0.0	11.77 0.003*
Total	11	100.0	23	100.0	40	100.0