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This April 13, 2011 file photo shows cows at a Karan Beef farm outside Heidelberg, south-east of Johannesburg, South Africa. REUTERS/Siphiwe Sibeko LONDON, March 20 – Herds of African cattle may hold the secret to new ways of fighting parasitic diseases like malaria, which kills some 600,000 people a year, scientists said on Friday. Read the full article by here: … [Read more...] about Cattle parasite study points to possible way to fight malaria