portal of entry opportunistic Infection morbidity pathogen healthcare-associated infection virulence factors pathogenicity toxemia Entry into the host by a which can cause disease in a healthy host pathogen can be via a which can cause disease in an immunocompromised host which can establish can lead to attachment and avoidance of host defenses, which depend on may be caused by normal biota may be caused by drug- resistant microbes such as enzymes and toxins that may trigger may enhance which together with fever other signs and symptoms define a Reset

What is the term that describes the ability of a virus to cross the blood-brain barrier and infect the brain? neuroinvasive nonproductive infection gastroinvasive encephaloinvasive

Regular herpesvirus-mediated cold sores or genital sore flare-ups are caused by reinfection by the same herpesvirus strain reinfection by a closely related herpesvirus of a different strain copies of the herpesvirus genome permanently maintained in host cell cytoplasm copies of the herpesvirus genome permanently maintained in host nuclei

Although technically not part of the immune system,nonpathogenic normal microbiota play a major role inpreventing disease. Describe this role.