Table 2.

The three different post-exposure prophylaxis protocols used in N’Djamena [table adapted from Hampson et al. (17)].

Protocol	Number of clinical visits	Days of injection after exposure	Number of injections per day	Overall vaccine quantity needed (ml)	Administration pathway	Approved by
Essen 5 doses	5	0,3,7,14,28	1,1,1,1,1	5a	IM	WHO (1992)
Essen 4 doses	4	0,3,7,14	1,1,1,1	4a	IM	ACIPb (2009)
Zagreb	3	0,7,21	2,1,1	2a	IM	WHO (1992)

^aCalculated on the basis of 0.5 ml per dose.

^bAdvisory Committee on Immunization Practices.