What is ‘goat plague’ that has forced Greece to ban the movement of livestock?

Greece is experiencing an outbreak of cases of Peste des Petits Ruminants, a deadly virus that does not affect humans but is fatal for goats and sheep. To contain the spread, Greece banned the movement of the animals across the country. The virus’s spread can have a profound impact on the European country that has the largest goat population and is crucial in making the country’s trademark feta cheese