Population displacement caused by cyclone damage and flooding can result in overcrowding in resettlement areas, raising the risk of transmission of certain communicable diseases. Measles (see section below on vaccine-preventable diseases), ARI, diphtheria and pertussis are transmitted from person to person through respiratory droplets, and the risks are increased in situations of forced relocation to shared areas which are overcrowded and have inadequate ventilation. Overcrowding can also increase the likelihood of transmission of meningitis, waterborne and vector-borne diseases. ARI. Acute respiratory infection includes any infection of the upper or lower respiratory system. A major concern in Myanmar.
