Spatial Dynamics of Chikungunya Virus, Venezuela, 2014

• DOI: 10.3201/eid2504.172121
• Publication Date: 2019-02-27T12:29:28Z
• Authors: Erley Lizarazo; Maria Vincenti-Go...; Maria E. Grillet; Sarah Bethencourt; Oscar Diaz; Noheliz Ojeda; Haydee Ochoa; Maria Auxiliadora...; Adriana Tami
• Keywords: Preparedness; Chikungunya fever; Basic reproduction number; Alphavirus infection

Since chikungunya virus emerged in the Caribbean region late 2013, ≈45 countries have experienced outbreaks. We described and quantified spatial temporal events after introduction propagation of into an immunologically naive population from urban north-central Venezuela during 2014. The epidemic curve (n = 810 cases) unraveled within 5 months with a basic reproductive number 3.7 radial spread traveled distance 9.4 km at mean velocity 82.9 m/day. highest disease diffusion speed occurred first 90 days, space space-time modeling suggest followed particular geographic pathway spatiotemporal aggregation. directionality heterogeneity transmission indicated existence areas elevated risk for highlight importance preparedness. This information will help managing future threats new or reemerging arboviruses.