<prompt> Answer this question truthfullyWhat is the name of the virulence factor that is commonly found in Streptococcus pneumonia, H. influenzae Type B, and Neisseria spp.?  <response>: <reason> The name of the virulence factor that is commonly found in these three bacterial species is IgA protease. This enzyme is capable of cleaving immunoglobulin A IgA, which is an important component of the bodys immune system, and can help these bacteria evade the hosts immune response. 