Sewage sludge was monitored for the presence of salmonellas after it had been dumped on a pasture so that it formed a number of extensive, thick pats. Although salmonellas were isolated from the sewage sludge, and also from grass and soil beneath the sludge for up to 94 days, they were not isolated from the faeces of grazing horses or surrounding drainage ditches. The results are discussed with regard to the possible hazards resulting from the use of sewage sludge on pasture.
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