Cholera Vaccination Milestone: Preventive Campaigns Resume After Three-Year Global Shortage
For the first time in over three years, global cholera vaccine supplies have recovered enough to restart life-saving preventive campaigns, with Mozambique leading the way as the first country to resume immunization amid ongoing outbreaks and flooding.
A Critical Milestone in Global Health
In a development that marks a turning point in the fight against one of the world's oldest epidemic diseases, the World Health Organization announced on February 4, 2026, that global supplies of oral cholera vaccine have reached a level sufficient to resume preventive vaccination campaigns for the first time in more than three years. Mozambique has become the first country to restart these life-saving programs, with campaigns launching amid an ongoing cholera outbreak compounded by devastating floods.
The resumption follows a prolonged period during which preventive campaigns were suspended globally. In 2022, a massive surge in cholera cases drove demand for the vaccine beyond available supply, forcing health authorities to make the agonizing decision to halt preventive efforts and reserve all available doses for reactive campaigns in active outbreak zones.
Supply Has Doubled
The recovery is the result of sustained effort by vaccine manufacturers, international health organizations, and donor nations. Annual global supply of oral cholera vaccine has doubled from 35 million doses in 2022 to nearly 70 million doses in 2025. This dramatic increase, financed by the vaccine alliance Gavi and procured and delivered by UNICEF, has finally created enough headroom to move beyond emergency response and back to prevention.
The initial allocations reflect the scale of ongoing need: 3.6 million doses have been delivered to Mozambique, 6.1 million to the Democratic Republic of the Congo, which continues to battle significant outbreaks, and 10.3 million doses are planned for delivery to Bangladesh, another country facing persistent cholera risk.
Mozambique: Ground Zero for the Restart
The choice of Mozambique as the first country to resume preventive vaccination is both symbolic and practical. The southern African nation is dealing with an active cholera outbreak that has been intensified by recent floods affecting over 700,000 people. The floods disrupted water and sanitation infrastructure, creating ideal conditions for waterborne disease transmission.
Cholera thrives where clean water and proper sanitation are absent, making it both a medical challenge and a development indicator. The disease causes acute watery diarrhea that can kill within hours if untreated, yet it is almost entirely preventable through vaccination, clean water access, and basic hygiene practices.
The Road Ahead
While the resumption of preventive campaigns represents genuine progress, global health officials caution that the fight against cholera is far from won. Climate change is increasing the frequency and severity of floods and droughts that disrupt water systems and create outbreak conditions. Rising global temperatures expand the geographic range where cholera's bacterial agent can survive and thrive.
The WHO estimates that cholera still affects 1.3 to 4 million people annually, causing between 21,000 and 143,000 deaths. In many of the world's most vulnerable communities, the disease remains an ever-present threat. The return of preventive vaccination is a necessary but not sufficient step toward a future where cholera is no longer a killer of the poor and the displaced.
