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Previous exposure to dengue may make Zika worse, scientists find

By Kate Kelland LONDON (Reuters) – Scientists studying the Zika outbreak in Brazil say previous exposure to another mosquito-borne virus, dengue, may exacerbate the potency of Zika infection. The scientists said their results, published in the journal Nature Immunology, suggested that some dengue antibodies can recognize and bind to Zika due to the similarities between the two viruses, but that these antibodies may also amplify Zika infection in a phenomenon called antibody-dependent enhancement. This effect is already known with dengue, they said, and is thought to explain why, when a person gets dengue fever a second time, the infection is often more serious than the first.

India failing to tackle ‘massive TB crisis’: British Medical Journal

India is failing to tackle a tuberculosis epidemic because of chronic shortages of funds and the government's inability to regulate an “exploitive” private health sector, an article in the British Medical Journal said. The article, published ahead of World Tuberculosis Day on Tuesday, called for a massive investment in public health infrastructure to diagnose and treat what it called India's biggest health crisis. India accounts for an estimated 2.2 million of the 8.6 million new cases of tuberculosis that occur globally each year and harbours more than twice as many cases as any other country, according to the World Health Organization. The article by Zarir F Udwadia, a doctor at one of Mumbai's biggest private hospitals, said the government's TB programme was failing to monitor the country's burgeoning private health sector.