Of the three louse vectored pathogens here, which is or are unable to invade the insects gut and penetrate into its body cavity to grow and reproduce?

Three Louse Vectored Pathogens

Explanation:

The body louse , Pediculus humanus corporis, is the vector of three human pathogens such as   the operator of pandemic typhus  and Borrelia recurrentis and Rickettsia prowazekii,The specialist of backsliding fever and Bartonella quintana, the operator of channel fever, bacillary angiomatosis, endocarditis, incessant bacteremia, and constant lymphadenopathy.Mite borne ailments can be related with high rate of illness and demise, particularly scourge typhus and backsliding fever, which can be lethal in up to 40% of patients. The ailments are for the most part common in individuals living in neediness and packed conditions, for instance, vagrants and those associated with war circumstances.

Your answer is b. codominant