Nipah virus cases confirmed in India

Two cases of the deadly Nipah virus have been confirmed in India's West Bengal state and at least 190 people have been quarantined. It's prompted multiple countries in Asia to step up airport screenings to prevent the spread of the infection, which at this stage has no vaccine or proven treatment. However, experts say while it's a dangerous virus with a high fatality rate, it doesn't spread easily from person-to-person.