SCIENTISTS fear that the world's 'mostly deadly infection' could be spreading silently through communities, as conventional tests fail to spot the bacteria causing it.It's been assumed the illness spreads through droplets released by the coughs and sneezes of people who test positive for TB.People may still carry the infection despite testing negative for TB, thus unknowingly transmitting it to others, the researchers said.
Researchers found that Mtb was present in the exhaled breath of 90 per cent of people suspected of having TB, including those whose sputum test had come back negative. Ben Patterson, external PhD candidate at Amsterdam UMC and AIGHD, added: “If someone carries Mtb in their respiratory tract, this may also mean they can spread it.- suggest there's "a much broader range of people transmitting TB than previously recognised", which would have "significant implications" on public health systems designed to stop transmission that are currently in place.
But 20 per cent of all participants continued to test positively for Mtb with aerosol tests after six months. Dr Cobelens said: "Together, our results indicate how complex tuberculosis is, and perhaps also why it is so difficult to eliminate tuberculosis in endemic areas.
Source: Healthcare Press (healthcarepress.net)
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