>>> Interesting why there is not lots of malaria in cities if you need large groups of people to pass it on?
I think the main reason is because of the type of mosquito that transmits malaria – callled "Anopheles".
Only Anopheles mosquitoes can transmit malaria and they must have been infected through a previous blood meal taken from an infected person. When a mosquito bites an infected person, a small amount of blood is taken which contains microscopic malaria parasites. About one week later, when the mosquito takes its next blood meal, the parasites mix with the mosquito's saliva and are injected into the person being bitten. The females of the Anopheles genus of mosquito prefer to feed at night. They usually start searching for a meal at dusk, and will continue throughout the night until taking a meal.
As far as I know, Anopheles mozzies don't survive in large cities which is why the smaller village/shanty town environment enables them to go crazy.
I think I did get jabs for some of the others. Probably wouldn't hurt as it's a one-off. Unfortunately, the malaria pills are a daily thing and migth really mess with your head.