Winds could spread diseases
Times 30 Sept 2004. Paul Simons writes .............
THE extraordinary bout of hurricanes in the US this year has left a nasty legacy which could make steak, vegetarian burgers and many other foods more expensive.
A fungal disease called Asian soybean rust appeared in Louisiana this month. It is thought that the fungal spores were spread from Colombia on the battering of hurricane winds and rains in August and September (The Times, November 27).
The virulent disease is spreading rapidly into neighbouring states and could be easily swept on winds across the US. The damage it causes could send the price of soya bean foods and cattle-feed soaring.
The fungal spores spread across South America in just two years. But many other diseases also blow in the wind, often carried on clouds of Saharan dust. In 1978, an outbreak of sugarcane rust appeared in the Dominican Republic and spread rapidly through the Caribbean. The outbreak coincided with the arrival of wind-borne dust from West Africa.
Human health is also under threat from Saharan fallouts. Clouds of dust laden with bacillus bacteria have been linked to high rates of asthma, allergies and other lung ailments in Florida and the Caribbean.
In Britain, there are suspicions that the foot-and-mouth epidemic of 2001 began with a shower of Saharan dust that wafted over northeast England, washed down on a weather front.


