Diseases, Conditions, Syndromes

Coronavirus: what if the drugs don't work?

There is no known treatment for COVID-19 and early clinical trial results of repurposed drugs have so far been disappointing.

Medications

Scientists raise concern over hydroxychloroquine study

Dozens of scientists have raised concerns over a large-scale study of hydroxychloroquine and chloroquine published in the Lancet that led to the World Health Organization suspending clinical trials of the anti-viral drugs ...

Diseases, Conditions, Syndromes

Treatment of chloroquine poisoning

Research by Bangor University's Professor Dyfrig Hughes has provided important evidence on the safety of treatments that are being tested for use in COVID-19.

Diseases, Conditions, Syndromes

Bulgaria pins hopes on TB vaccine against coronavirus

In the worldwide battle against COVID-19, scientists are investigating whether a century-old tuberculosis vaccine might offer some additional protection against the novel coronavirus.

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Health effect

Health effects (or health impacts) are changes in health resulting from exposure to a source. Health effects are an important consideration in many areas, such as hygiene, pollution studies, workplace safety, nutrition and health sciences in general. Some of the major environmental sources of health effects are air pollution, water pollution, soil contamination, noise pollution and over-illumination.

A non-stochastic or deterministic health effect has a severity that is dependent on dose and is believed to have a threshold level for which no effect is seen. Stochastic health effects occur by chance, generally occurring without a threshold level of dose, whose probability is proportional to the dose and whose severity is independent of the dose, such as cancer and genetic effects.

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