PANDEMIC - CAUSES, SYMPTOMS & TREATMENT - DISEASES
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pandemic



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Oligomenorrhea (short and weak menstrual period)
Oligomenorrhea (short and weak menstrual period)
A pandemic is the spread of a disease over a very large area. The real flu (influenza) occurs as a pandemic about every 25 to 30 years. Vaccinations, clean drinking water and physical hygiene are some of the important tools