Table 1.

Anthelmintic treatment used to clear up parasitic infection before each of the two challenges.

Challenge	Period	Active principe	Dose rate	Number of drenches
Oral	Nov/2005	Closantel1	10 mg/kg of host body mass	2
Oral	Nov/Dez/2005	Ivermectin2	200 μg/kg of host body mass	2
Oral	Dez/2005	Moxidectin1	200 μg/kg of host body mass	2
Parenteral (subcutaneous)	Jul/Aug/2006	Moxidectin1	200 μg/kg of host body mass	2