Dear Colleagues, When we first developed PPR Sungri/96 vaccine, during the initial field evaluation of vaccine we observed goats were better sero-converters than Sheep. In a study involving more than 500 post-vaccinate sera samples in each of the species, we observed 98% sero-conversion in goats and 83% in sheep. Even the VN titer was lesser in sheep than goats (eg., most of the goats had 1:64 to 1:128 and sheep it was 1:32 to 1:64). PPR Sungri/96 virus which was used to develop attenuated vaccine was originally rescued from post-mortem samples from a goat died in the PPR outbreak. Does this suggests that we should have separate vaccine candidates for sheep and goat? I must confess I am not keeping abreast of PPR literature as I have moved away from PPR research almost 11 years back. Regards Srinivas I hope that several of you will give us your views on this radical idea - moderator ________________________________ Dr.B.P.Srinivas Principal Scientist Indian Veterinary Research Institute (IVRI) Hebbal, Bangalore-560024 India Tel: 91-80-23410729 (Work) Fax: 91-80-23412509 ######################################################################## To unsubscribe from the FAO-AnimalHealth-L list, click the following link: https://listserv.fao.org/cgi-bin/wa?SUBED1=FAO-AnimalHealth-L&A=1