factors affecting transmission

• living conditions - overcrowded living conditions increase transmission.

  TB Is spread directly via droplet infection. its also spread indirectly because the bacteria can remain in the air for a while
• social factors - HIV infection is high in areas with limited access too good healthcare and education
• climate - potato/ tomato blight is common during wet summers because spores need water to spread and malaria is more common in tropical countries as there humid and hot which are the ideal conditions for mosquitoes to breed