2021/11/11 · 11 November, 2021, AM. 1625. Although the PRRS virus is still present in the Philippines, there are new strains currently detected. Carlo Maala, Senior Technical Services Manager on Swine for Asia of Boehringer Ingelheim, told Asian Agribiz that the latest strain of PRRS documented in the country, back in 2008, is similar to PRRS strains in China.