- The vector mosquito, Aedes albopictus, is present in Mauritius and may spread the two viruses.
- In 2005 and 2006, Mauritius experienced Chikungunya and Dengue fever epidemics, respectively.
- Dengue fever is hard to eradicate once it has been introduced to a nation, and it tends to recur on a regular basis.
- If the percentage of infected people in a population is less than 70%, the Chikungunya outbreak is more likely to repeat.
- Mauritius has extensive travel and trade links to dengue and chikungunya
- In many countries, the shipment of used rubber tyres containing dengue virus-infected larvae has been identified as a source.
- The island has multiple high-risk environmental zones that encourage the spread of imported illness viruses in the native mosquito population.
As a result, during the epidemic phase, the focus is on containment and mitigation, but during the quiescent interepidemic phase, the focus is on early warning through surveillance and control. As a result, the surveillance objectives will vary depending on the phase. The major objectives are to:
1. Provide all stakeholders with a step-by-step strategy to epidemic control.
2. Outline a step-by-step procedure for predicting an outbreak.
3. Outline a step-by-step plan for containing an epidemic before it spreads.
Methods to control chikungunya and Dengue spread
1. Space spray operations (thermal fogging or ULV aerosols) must be carried out as soon as possible following the notification of the index case by the CDCU operation team or the regional team.
2. Spraying must be done within a radius of 300 meters of the case house.
1. All houses within 500 meter radius of the case house must be totally surveyed for
Aedes breeding grounds by the PHI.
2. Larval surveys must be carried out within 24 hours of notification of the first case
from an outbreak by Vector Biology and Control Division.