North Syria - Since 2016, west Aleppo countryside, in northern Syria, has been one of the main destinations for internally displaced persons (IDPs) evacuated from besieged areas, including east Aleppo City, Homs, South Hama and, recently, East Ghouta. In April, MSF, in partnership with the Syrian Immunization Group (SIG) and the Aleppo Health Directorate, launched a mass vaccination campaign in West Aleppo to immunise more than 50,000 children against measles, rubella, and pneumococcal disease and its complications, which include meningitis and respiratory infections.