Infectious Disease Flashcards
What are microbial pathogens
bacteria, viruses, protozoa, prions
What does Host-microbe interaction depend on?
virulence factors and host immunity
opportunistic pathogens
microbes that are in contact with the host or the person is infected
infectious diseases
diseases that are caused by the presence of a microbial pathogen
What happens when a pathogen is in contact with a host?
the pathogen can enter and multiple or die if the host has a strong immune system
How can transmission occur
through various means
What are the two vectors in the transmission of infectious diseases
biological vector and mechanical vector
biological vector
if the pathogen is located within it, and introduced into the host
mechanical vector
if it carrie the parasite to the host
H. pylori bacteria
causes gastritis and ulcers
What bacteria does half of the population of the world have?
H. Pylori bacteria
What are virulence factors?
molecules expressed and secreted by pathogens that help you adhere to the host, evade the immune response and feed from a host
What are virulence factors responsible for?
causing disease in the host because they have the ability to inhibit certain host’s factors
What are the two bacterial toxins?
endotoxins and exotoxins
Endotoxins
refers to bacterial toxins
