Chickenpox is more likely to be found in temperate countries than in tropical countries, and is more likely in countries in which chickenpox vaccination is not routine for children.
why older people weren't affected by measles
In most low-income countries.
Measles
Japan is a country that is most affected by them
Japan is a country that is most affected by them
Most countries are not, but some are.
The three most affected were no doubt Germany, Poland and the Ukraine.
In the recent recession the main affected countries are The U.S.A ,Europe, Japan and China and Asia as well.
The form of internal migration that has affected most countries is people moving from rural areas to cities. Today, most of the world's population lives in a city.
India
Everyone who has not been immunized.
measles are most contagouse towards when the people who have the measles start getting better.