It also looks at the relationship between parasite density in people and the rate at which humans transfer those parasites back to the mosquitoes that carry them.

ECONOMIST: Linking up computers to defeat malaria

In recent years, problems have fouled acquaculture's reputation: pollution from waste runoff, high disease and parasite rates due to a high density of fish and the uptake of industrial chemicals harmful to humans have combined to make fish less healthy to eat.

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