How do warzones and natural disasters become breeding grounds for infectious diseases?

Crowding in shelters/camps, increasing contact between people

Mixing of different regional populations with different levels of vaccination or endemic disease

Contamination of drinking water

Spread of infectious mud or soils (leptospirosis)

Disruption or delay of vaccination programs

Death or disappearance of key medical and administrative staff

Destruction of key facilities (laboratories, hospitals, clinics, etc.)

nope, but i have cleaned my brush in my cup of not as potentially harmful but nevertheless, very upsetting for scottish/british folks. especially if you've used the last teabag for it

explanation:

there could be something in that . . i am indeed an old scottish man!

there's a bit of bolshie-ness with it too though. i won't let go of the old ways . . tea and whisky . . whether the young whippersnappers like it or not!