Mosquitoes develop resistance to DDT

Our History: August 1952

We’re not certain whether the “Big Stinky” fly trap advertised in our Aug. 7, 1952 issue lived up to its claims, but we hope the bottles of fluid were well packed when being mailed from Toronto.

The ad was below a story which said that while some mosquitoes in the U.S. had developed resistance to DDT, none had been reported in Canada. A representative of chemical manufacturer CIL said resistance would take two or three years longer to develop in Canada, and if so, other chemicals would be available.

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This may sound familiar, but our front page reported that the Canadian Federation of Agriculture was warning that a large crop was on the way, and that action was needed to keep grain moving, especially because of competition from heavy shipments of other products.

Another story said that beef demand could increase following a 20 to 25 per cent drop in retail prices. It said that some feeders were facing “ruinous losses” following a sharp drop from record cattle prices in 1951, due in part to embargoes on shipments to the U.S.

It would be another two years before the Salk polio vaccine was available, and another item in the issue said that while the current epidemic had not reached the panic stage, it would be wise to take precautions such as avoiding excessive swimming and getting a chill.

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