Dengue Vaccine Rollout: Ahead of dengue vaccine rollout, all 4 strains found in circulation | India News - The Times of India
NEW DELHI: As India moves towards introducing a dengue vaccine by next year, the country's first nationwide mapping of dengue virus strains has found all four serotypes circulating simultaneously in eight states and UTs, a development researchers say could influence vaccine strategy as infections with multiple strains are associated with more severe disease.