COLOMBO – For months he’s been anonymous, but now Prasad Dinesh, linked by Sri Lankan authorities to nearly half of the country's more than 2,600 coronavirus cases, is trying to clear his name, and shed some of the stigma of a heroin addiction at the root of his ordeal.Under President Gotabaya Rajapaksa, a former army lieutenant colonel credited with helping end Sri Lanka's long civil war in 2009 with a brutal military campaign against separatists, the Indian Ocean island nation has used the armed forces to combat the virus.When Rajapaksa was elected president last year, a health unit was created in the intelligence service that sprang into action when COVID-19 first appeared, according to State Intelligence Service Assistant Director.