4.1.1 b transmission of disease Flashcards
how does direct transmission of disease occur between animals?
direct contact
inoculation
ingestion
how can disease be transmitted through direct contact?
contact with bodily fluids
skin to skin
microbes from faeces
how can disease be transmitted through inoculation?
break in the skin
animal bite
puncture wound
how can disease be transmitted through ingestion?
taking in contaminated food or drink
transferring pathogens from hand to mouth
how does disease transmitted indirectly between animals?
fomites
droplet infection
vectors
what are fomites?
inanimate objects
what is droplet infection?
droplets of saliva and mucus are expelled from your mouth and others breathe in the contaminated droplets
what are vectors?
vectors transmit disease from one host to another
what are factors that increase the transmission of communicable diseases in animals?
poor nutrition
overcrowding
compromised immune system
polluted air
outbreak of a disease
poor disposal of waste
climate change
culture
infrastructure
socioeconomic factors
how is disease transmitted directly in plants?
direct contact of a healthy plant with any part of a diseased plant
how is disease transmitted indirectly in plants?
soil contamination
vectors- wind, water, animals, humans
what are the factors affecting transmission of communicable diseases in plants?
same equipment used
weather
overcrowding
soil quality- mineral deficiency
temperature
bringing plants from different countries