Occurrence of Peste Des Petitis Ruminants in Five Districts of Punjab, Pakistan
Muhammad Moazam Jalees, Iftikhar Hussain*,
Muhammad Arshad, Ghulam Muhammad1, Qaiser Mehmood Khan2
and Muhammad Shahid Mahmood
Institute of Microbiology;
1Department of Clinical Medicine and Surgery,
University
of Agriculture,
Faisalabad; 2National Institute for
Biotechnology and Genetic Engineering, Faisalabad,
Pakistan *Corresponding author:
driftikharuaf@gmail.com
Abstract
The present study was carried out to know the
seroprevalence, molecular characterization and molecular epidemiology of peste
des petitis ruminants (PPR) virus. The serum (n=440) and tissue (n=242) samples
were collected from sheep and goat population reared in the central and
peripheral districts of the Punjab province.
The specimens were subjected to RT-PCR for the specific detection of fusion (F)
protein genes of PPR virus. The cELISA test was applied to serum samples to know
seroprevalence. Overall 51.5 and 46.5% seropositivity was found in sheep and
goat, respectively. Seropositivity under different ages 1, 2 and >2years was
recorded as 46.5, 60.5 and 37.8%, respectively. Species and sex variation of
seropositivity was recorded at 60.3 and 32.8% in buck and doe, respectively and
64.8 and 50.7% in ewes and ram, respectively. Sixty percent goat and 55.6% sheep
population in Faisalabad
district was seropositive for PPR virus, followed by the Bhakkar district where
PPR virus seropositivity was 55.1% in sheep and 53.5% in goat. Specimen samples
recovered from outbreak cases showed 372bp RT-PCR product indicating the
presence of F specific protein region of PPR virus. Maximum predilection for PPR
virus was lymph nodes (87.5%) in sheep as well as in goats followed by spleen
(62.5%), nasal swabs (59.1%) and blood (51.4%). The phylogenetic analysis showed
similar percentages and relationship with already reported data of this region.
The present study reports that PPR virus is affecting the sheep and goat of less
than two years of age with high frequency. The prevalent PPR virus is homologous
with most of the reported PPR viruses from the Asian outbreaks.
Key words:
c-ELISA, Pakistan, Peste des petits ruminants, Punjab, RT-PCR