Complete the following passage by supplying the missing word. Only one word must be filled in the blank space.
The most common diseases found in Zambia are malaria, bilharzia and other parasitic
infections including hookworm and leprosy. By (1)the
most prevalent of (2)is malaria, causing about five
percent of admissions to hospital per month. It (3)plenty
of deaths in the country (4)among children. Exactly how
many people have it is not known. It is estimated (5)over
twenty-five percent of children have malaria parasites (6)in their blood. They may
not
cause serious malaria illness, but together
(7)malnutrition, they cause weakness and
(8)of energy over a long period of time. Moreover, when
these children catch measles or some infections of the stomach or breathing organs, a high
proportion of them die.
Bilharzia (9)to hospital are also quite many it is very
common especially (10)boys weakness (11)
(12)made to detect cases early​