prevelance polycethermia vera
Answer: Prevalence can be defined as the number of the cases of the disease that are present in the population at the particular time.
The polycythemia vera is a kind of blood cancer where the bone marrow produces amole amount of red blood cells. This causes blood to become thicker. The polycythemia vera usually afftects the people over the age of 60 . It occurs mainly in men as compared to the women. This affected 2 people out to 100,000 in a population. It can also affect the people of age 20 years but in rare condition.
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