Public health campaigns have long been important instruments for delivering health interventions at scale and with high coverage for programmes including in malaria for bed- net distribution, indoor residual spraying and seasonal malaria chemoprevention; in immunization for vaccines for polio, measles, yellow fever, COVID-19 and other vaccine- preventable diseases; and in neglected tropical diseases mass drug administration. Because they dedicate resources toward achieving clear objectives during a defined period, campaigns can be efficient tools for delivering priority health services and can complement services provided through routine integrated health systems.