_____ country was declared ‘measles-free’ nation by World Health Organization (WHO) ?

1) Myanmar
2) Bangladesh
3) Sri Lanka
4) Nepal

Explanation:
On July 9, 2019, The World Health Organization (WHO) declared that measles disease has been eradicated in Sri Lanka. The last case of measles caused by an indigenous virus was reported in May 2016. Measles is a highly contagious viral disease transmitted via droplets from the nose, mouth or throat of infected persons.With this, it became the 4th country after Bhutan, Maldives, and Timor-Leste to eliminate measles and control rubella in the WHO South-East Asia Region.In 2018, Sri Lanka along with Bangladesh, Bhutan, Maldives, Nepal, and Timor-Leste had achieved rubella control.