31. The current epidemic features a particularly virulent strain . 32. In this scenario, the host can survive only as long as it resists the most virulent strains . 33. But it could anger metro Atlanta residents, seeing it as a particularly virulent strain of Atlantis bash-itis. 34. Many candidates agreed that this year's primary introduced a new and more virulent strain of dirty campaigning. 35. Relatively few labs are believed to harbor live, virulent strains that could be stolen to make weapons. 36. It seems to be a virulent strain . 37. A virulent strain of A-Rod Fever is causing an epidemic of salary envy around the major leagues. 38. The Doctor informs Janeway that she has been infected by a virulent strain of the Vidiian nerve gas. 39. This is a really virulent strain , 40. This year's cases are attributed to a resurgence of Dengue 3, a more virulent strain of the virus.