Table 2.

Alpha diversity indices observed in groups

Grupos	Diversity		Richness	Observed OTUs
	Shannon index	Simpson index	Chao1
Pre vaccine	1.98–2.94 2.35 (0.23)	0.61–0.93 0.88 (0,07)	4–24 13.8 (5.23)	9–28 13.62 (5.009)
Post vaccine	2.20–3.18 2.48 (0.29)	0.49–0.95 0.85 (0.11)	2–44 15 (10.48)	13–29 15.08 (5.29)
P	0.31ª	0.93ª	0.91ª	0.32ª

^*Significant when P < 0.05

ªMann-Whitney test — values shown as minimum and maximum, mean and standard deviation