Bangladesh has initiated an emergency measles vaccination campaign following the deaths of more than 100 people, mostly children, linked to a fast-spreading outbreak recorded since mid-March.

According to BBC News, the outbreak has resulted in over 7,500 suspected measles cases, with more than 900 confirmed infections, a sharp rise compared to just 125 cases recorded throughout 2025. Health authorities have described the situation as one of the most severe measles waves in the country in recent years.

The nationwide campaign, launched on Sunday, is targeting at least 1.2 million children aged between six months and five years. It is being carried out in partnership with UNICEF and the World Health Organization, focusing on high-risk areas including the capital, Dhaka, and Cox’s Bazar, where densely populated refugee camps increase the risk of rapid transmission.

Health officials say the outbreak has exposed serious gaps in the country’s immunisation programme. Routine measles vaccinations are usually administered from nine months of age, but a significant number of recent infections have been recorded in younger infants who are not yet eligible for vaccination. According to UNICEF, these children are among the most vulnerable to severe illness and complications.

Authorities have also acknowledged disruptions to planned vaccination campaigns. A nationwide measles immunisation drive scheduled for April did not take place due to vaccine shortages and procurement challenges. These issues followed delays caused by the Covid-19 pandemic and political instability after the 2024 protests that led to the removal of former leader Sheikh Hasina.

Despite Bangladesh’s historically strong vaccination coverage, health experts warn that even small interruptions can create immunity gaps over time. UNICEF noted that such gaps, rather than a single failure, often lead to outbreaks.

Measles is a highly contagious airborne disease that spreads through coughing and sneezing. Symptoms include high fever, red and watery eyes, coughing and skin rash. According to the World Health Organization, at least 95% of a population needs to be vaccinated to prevent its spread.

Globally, measles cases have declined significantly over the past two decades. However, recent data shows a resurgence in several regions due to falling vaccination rates. Health authorities in Bangladesh are now urging parents to ensure children receive routine immunisations as part of efforts to contain the outbreak.