Which factors contribute to outbreaks of measles after natural disasters?
1 contamination of drinking water with untreated sewage
2 lack of effective vaccination coverage in the population before the disaster
3 people living in overcrowded accommodation
1 )
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
2 and 3 only
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!