Peste des petits ruminants

Indirect transmission

The gathering of animals around water points is conducive to the transmission of PPRV - © H. Salami.

Contamination also is possible by the ingestion of infected food or drink. Feeding and drinking troughs and soiled bedding also can be indirect sources of infection, but only for short periods because PPRV, like all of the morbilliviruses, cannot survive long outside the organism of a host animal. Its lipid bilayer envelope inherited from the cell host cannot withstand the heat and strong sun of countries in the South. When it loses its envelope, PPRV loses its infectivity.

Note

The persistence of PPRV in the environment is a parameter that needs to be researched more fully in order to be considered in risk analyses and epidemiological models designed to assess the probability of the introduction of PPR through animal movements towards disease-free countries such as those of the European Union.

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