Table 1 Criteria used to define epidemic status by country. Confirmed cases are those that are either PCR or IgM confirmed
From: Global burden of chikungunya virus infections and the potential benefit of vaccination campaigns
Epidemic status | Criteria |
|---|---|
Endemic - Good evidence | Confirmed autochthonous cases each year for the past 5 years. In the Americas, which has better disease surveillance, we include a criterion for a minimum of 1,000 detected autochthonous cases per year. |
Endemic - Poor evidence | Confirmed autochthonous cases each year in at least 3 of the past 5 years and/or serological evidence of endemic transmission. In the Americas, which has better disease surveillance, we include a criterion for a minimum of 100 detected cases per year. |
Epidemic - Good evidence | Confirmed cases since 2010 OR Serological evidence of transmission since 2010 |
Epidemic - Poor evidence | Confirmed cases prior to 2010 OR serological evidence of transmission prior to 2010 OR In low HAQ countries, no confirmed cases but probability albopictus/aegypti mosquitoes present >0.5 |
No transmission - Good evidence | In high HAQ countries, no confirmed cases OR Everywhere else, no confirmed cases and probability albopictus/aegypti mosquitoes present <0.1 |
No transmission - Poor evidence | No confirmed cases and probability albopictus/aegypti mosquitoes present 0.1–0.5 |
