1.   Health officials fear an outbreak of cholera and malaria in a country with poor sewage systems and a lack of potable water.

2.   While typhoid fever is not uncommon in countries with poor sewage treatment, it is rare in the United States.

3.   Heavy rains, stagnating water because of a poor sewage system and high temperatures have provided ideal breeding grounds for the malarial parasite.

4.   Heavy rains, stagnating water because of a poor sewage system and high temperatures have helped in the breeding of mosquitoes, which carry the malarial parasite.

5.   With poor sewage systems in the capital and squatter areas outside, the situation threatens to worsen, the paper said.

a. + sewage >>共 131
raw 35.25%
untreated 6.00%
treated 3.60%
open 2.64%
new 2.40%
human 2.40%
proper 2.16%
municipal 2.16%
improved 1.68%
poor 1.20%
poor + n. >>共 917
people 5.56%
country 4.79%
performance 3.63%
health 3.05%
family 2.95%
condition 2.69%
child 2.06%
neighborhood 1.95%
nation 1.73%
weather 1.60%
sewage 0.03%
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