What causes the measles vaccine to be less effective in children from less economically developed countries?
1 )
Their diet does not contain enough carbohydrate.
Their diet does not contain enough protein.
3 )
They are carriers of the disease.
4 )
They rapidly become reinfected.
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...