You learn that the pesticide malathion (an organophosphate) has replaced DDT thi

Question

You learn that the pesticide malathion (an organophosphate) has replaced DDT this spraying season because: 1) the mosquito has become resistant to DDT, 2) malathion is an effective pesticide, and 3) malathion is thought to be a relatively safe pesticide for human use based on much experience, including field trials in Nigeria and Uganda. You learn that there are about 7700 antimalaria workers, making up 1100 teams of 7 workers each (5 spraymen, 1 mixer, and 1 supervisor). In addition to the reported increase in illness (which suggested organophosphate poisoning), 5 deaths have occurred - 2 in mixers and 3 in spraymen. It is thought that one of the three brands of malathion was associated with the most severe illness (used by 3 of the 5 who died). It is also reported that the illness was more common on Friday and Saturday than on Sunday. What appears to be the main exposure problem in the episode described? How plan organisationally to investigate this outbreak? What case definition of "poisoning" would you suggest (use Table 1)?

Explanation / Answer

2) From the content above main exposure problem appears to be the coming in the direct contact with Malathion during the process of Spraying.

3) In order to investigate the problem the process that can be adopted is, set up a comittee whch will consists of some sprayers, some mixers and some management people. Then they should investigate the procedure which is being adopted for the work. Then they should list out possible situation and times when such exposure could have occured.

4) For this perticular condition we can define Poisoning as the excessive exposure to the toxic chemical leading to the sever illness or death.

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