अब फिर से उभर रहा है बच्चों का घातक रोग डिप्थीरिया

अब फिर से उभर रहा है बच्चों का घातक रोग डिप्थीरिया: The disease was vanishing from developing countries, too, at the beginning of the 21st century. But cases began to resurge about 15 years ago. Venezuela had a major outbreak, when its once-strong public health system fell apart during years of political instability. Bangladesh had one, beginning in 2017, mostly among Rohingya refugees packed into crowded