SIR - I read this week that Dr Tom Kosatsky, a medical epidemiologist at McGill University in Montreal said if rubbish is decaying for two weeks and heated by warm weather, it will provide a fertile breeding ground for spores.
Exposure to fungi at this level can trigger sore throats, respiratory problems, faintness, asthma and other allergic reactions.
Dr Tony Gladding, a lecturer in environmental engineering at the Open University, said councils introduced the change without recognising there could be a risk to occupational health.
The World Health Organisation recommends rubbish should be collected in temperate climates such as ours every week.
The National Pest Technicians Association has blamed many rat infestations on fortnightly collections.
JOHN SHEARON, Worcester.
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