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In the last 5 decades, the Singaporean government along with its people had succeeded in vector control and as a result, the ability to transmit infection was then limited by the availability of both people and mosquitoes.
A new generation of Singaporeans, having mostly escaped dengue infection, grew up and replaced the older, immune population. In addition, Singaporeans are better educated about potential infections and are more adept at diagnosing these symptoms.
This suppression strategy reduces the dengue mosquito population by mating male Wolbachia-carrying Aedes aegypti (Wolbachia-Aedes) mosquitoes with females not carrying Wolbachia, their resulting eggs do not hatch.
Eventually, releasing male Wolbachia-Aedes mosquitoes to urban areas will reduce the number of Aedes aegypti. In addition to reducing the risk of dengue, this method also reduces the risk of Zika and Chikungunya, which are both Aedes aegypti-borne diseases.
Aedes aegypti mosquito populations have been reduced by up to 98% at 4 study sites in Singapore. Comparing the core areas of the study sites with and without releases, the core areas saw up to 88% fewer dengue cases.
On June 15, the 5th Asia Dengue Summit was held in Singapore, infectious diseases expert, Professor Martin Hibberd from the London School of Hygiene and Tropical Medicine stated that the effectiveness of preventive malaria drugs can also be applied to controlling dengue outbreaks given that the dengue drug uses the same mechanism.
He also included that controlling the chain of dengue transmission within a community or household is time-sensitive, with the prophylactics, the time frame can be extended. Particularly since several days pass before the symptoms of dengue infections is presented in the person.
Currently, in Singapore, researchers are running clinical trials on a drug formulated by Janssen Pharmaceuticals, a Belgian drug manufacturer. Like the mechanism used by malaria drugs, the new experimental drug prevents 2 proteins (NS3 and NS4B) from the dengue virus.
Severe dengue has several warning signs, and they include:
Other symptoms you should note for are giddiness when standing or sitting up, decreased urine output or a poor appetite.
If you are an elderly or know one, it is important to note that seniors may have different symptoms. They may have less aches and pains and may appear to be tired. At times, they may have a decrease in appetite.
The difference between Covid and Dengue is that Covid includes fever and tend to have more respiratory symptoms like shortness of breath, runny nose, cough, loss of smell or taste and sore throat. If you are unsure, do see a doctor and they will conduct the appropriate test to diagnose the illness you may have.
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