He has been directed to a Covid-19 treatment facility and steps are being taken to identify his close associates.
Mr. Yapa is the 6th member of Parliament to contract Covid-19.
Earlier, Dayasiri Jayasekera, Vasudewa Nanayakkara, Rauff Hakeem, Piyal Nishantha and Pavithra Wanniarachchi were infected.
NIE DG also contracts Covid-19
Meanwhile, it is said that the Director General of the National Institute of Education (NIE) - Dr. Sunil Jayantha Navaratne too, has contracted Covid-19.