TABLE 1.

Percentages of infected honey bees in the different test groups^a

Group	Temp (°C)	% of infected bees on p.i. day:
		1	2	3	4	7
N. apis-exposed bees	25	33	53	100	100	100
	33	66	93	100	100	100
	37	53	60	60	60	0
N. ceranae-exposed bees	25	100	100	100	100	100
	33	100	100	100	100	100
	37	100	100	100	100	100
Controls	25	0	0	0	0	0
	33	0	0	0	0	0
	37	0	0	0	0	0

^aA bee is considered to be infected when at least one spore is observed in the hemocytometer's entire central square millimeter grid (19).