We described for the first time in Algeria PPR seroprevalence, distribution and risk factors.

We revealed a high seroprevalence and a widespread distribution of PPR in Algerian small ruminants.

We performed a multivariable risk factor analysis (logistic regression) at the flock level.

The mixed flocks and contact with other flock are a risk factor in the spread of the disease in Algeria.

The establishment of early warning systems and proper implementation of control measures are needed.