Communicable Disease Flashcards
what is herd immunity
when most of a population is vaccinated against a disease
how does vaccination protect against a specific pathogen
stimulates body to produce antibodies against pathogen- if the same pathogen re-enters the body, white blood cells produce antibodies quicker
what does a vaccine contain
dead/inactive pathogen
4 methods of controlling spread of communicable disease
-good hygiene
-isolating infected individuals
-controlling vectors
-vaccination
name a disease caused by a protist
malaria - caused by protist spread mainly by mosquito bites, causes recurrent fevers
name a fungal disease
rose black spot
name 2 bacterial disease
-salmonella
-gonorrhea
name 3 viruses
-measles
-HIV
-tobacco mosaic virus
how do viruses make you ill
reproduce rapidly inside cells, damaging or destroying them
how do bacteria make you ill
produce toxins that damage tissues
how do pathogens spread
-air
-water
-direct contact
what is a pathogen and give 4 examples
a microorganism that causes disease
bacteria, virus, protist, fungi
what is a communicable disease
a disease that can be transmitted from one organism to another
