Lessons from Bihar’s 2016 dengue outbreak : Migration, poverty, garbage are spreading new diseases

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In 2016, dengue hammered Krah. As many as 100 people living in this densely-packed, predominantly Muslim ghetto of about 1,000 families near Biharsharif contracted the disease, say residents. The scale of the outbreak was unprecedented. As Mohammad Ilyas, a young tailor who works and lives in Krah, said: “We never had such an outbreak earlier.”

The disease itself is a newcomer to the region. Krah and surrounding areas have been battered by many diseases. But many of the old diseases are in decline now, according to Dr Lakshmi Chaudhary who runs a clinic in adjacent Silao. “There were only two-three cases of jaundice last year,” he said. “Hepatitis B is even lower. We now almost never see cases of diarrhoea.”

Here, people now suffer from other ailments. There is more cancer, dengue and chikungunya, said Chaudhary.

This is the story across Bihar. Doctors, epidemiologists and people living across the state say that in the last ten years the state’s disease burden has seen three large changes. First, some infectious diseases like kala azar, measles, diphtheria, pertussis and polio that used to wreak havoc earlier are far less common now. Second, people are falling to new diseases like drug-resistant tuberculosis, dengue, chikungunya, Japanese encephalitis and arsenic poisoning. Third, some of the old infectious diseases – hepatitis A and E, malaria, pneumococcal meningitis and typhoid – are claiming more patients than before.

This, as the article says, is very different from the epidemiological transitions in other states. And gets into the reasons why. Part two, out tomorrow, will look at the state’s response to these causal factors.

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