Health problems at school

Many childhood illnesses are caused by viruses. All it takes is a single child to bring a virus to school for the spread to begin. Consider this common scenario ā€” a child who has a cold coughs or sneezes in the classroom. The children sitting nearby inhale the infected respiratory droplets and the cold spreads.
http://payrankseo.blogspot.com/2017/05/health-problems-at-school.html

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