Ultraviolet lights fends off TB infection in hospital wardsMarch 17th, 2009 - 3:53 pm ICT by IANS
London, March 17 (IANS) The simple expedient of using ultraviolet or UV lights while having the fan on potentially cuts down the spread of tuberculosis in hospitals.
TB transmission in overcrowded healthcare facilities is an important public health problem, especially in low resource settings, populations affected by HIV and locations where drug-resistant TB occurs frequently.
Rod Escombe of Imperial College, London, and colleagues used guinea pigs housed on the roof of a hospital in Lima, Peru, to test whether simple approaches to disinfecting air could reduce transmission of TB.
With results from more than 900 guinea pigs, the researchers found that 35 percent of those exposed to untreated air from patient rooms developed TB infection, compared to 14 percent in the treatment group, and only 9.5 percent of those breathing air vented from rooms during treatment with upper-room UV lights and mixing fans.
Guinea pigs are susceptible to airborne infection with M. tuberculosis, the bacterium that causes TB, and they can therefore be used as a sensitive detection system for infectious particles, said an Imperial College release.
By venting air from the rooms of patients with active TB through the guinea pig enclosures, the researchers were able to compare guinea pigs exposed on days when UV lights and air mixing fans were turned on in the patient rooms to other guinea pigs exposed when UV lights were off.
These findings were published in PLoS Medicine.
- UV light could reduce spread of TB - Mar 17, 2009
- Standard re-treatment regimen for TB 'failing' in developing world - Mar 16, 2011
- New test top diagnoseTB proves effective, convenient - Sep 02, 2010
- Novel light beams can kill hospital superbugs - Nov 16, 2010
- 'Urgent measures needed to control drug resistant TB' - Mar 23, 2012
- Central team to probe drug resistant TB cases in Mumbai - Jan 17, 2012
- China reports 900,000 TB cases in 2011 - Mar 21, 2012
- Low-cost pain killer can wipe out resistant TB, say researchers - Sep 13, 2012
- No drug-resistant TB case in India: Expert team - Jan 20, 2012
- Why TB Matters to Women's Health? - Aug 17, 2010
- Berlin 2010: TB, HIV and Lung Health: From research and innovation to solutions - Nov 02, 2010
- New vaccine strategy tested in mice shows promise against TB - Jan 26, 2011
- Priority is to up collaborative TB-HIV activities - Jul 19, 2010
- Awareness programmes mark World Tuberculosis Day in Delhi - Mar 24, 2011
- Tuberculosis enzyme responsible for lung destruction identified - Apr 26, 2011
Tags: bacterium, breathing air, drug resistant tb, expedient, guinea pig, guinea pigs, healthcare facilities, hospital wards, imperial college london, infectious particles, lima peru, london march, patient rooms, public health problem, resource settings, sensitive detection, tb infection, treatment group, upper room, uv lights