Dante Lam
The Viral Factor is a 2012 Hong Kong-Chinese action film directed by Dante Lam and starring Jay Chou and Nicholas Tse. The supporting cast includes Lin Peng, Michelle Bai, Andy On, Carl Ng, Liu Kai-chi and Elaine Jin, with action direction by Chin Kar-lok. Production for the film started in March 2011, and was theatrically released on January 17, 2012.