China Launches Largest Campaign Against Chikungunya
China has launched the largest health campaign in its modern history to combat an outbreak of the Chikungunya virus, which has swept through the south of the country since mid-June, infecting nearly ten thousand people as of August 17. The majority of cases have been concentrated in the cities of Foshan and Canton, with the virus confirmed to have spread to Hong Kong following the infection of a young person returning from mainland China.
The virus is transmitted through the bites of Aedes mosquitoes, and symptoms include high fever and severe joint pain. The heavy monsoon rains between late June and early July have created ideal conditions for mosquito breeding in stagnant water and flooded areas, coupled with diminished immunity among the population, increased trade exchanges, and climate change, elevating the risk of it becoming endemic.
The correspondent for the French newspaper Le Monde in Beijing reported that local authorities have implemented strict measures, including the forced hospitalization of some patients until they recover, assigning health teams to conduct field visits to inspect balconies and gardens, removing stagnant water containers, spraying passersby with mosquito repellent, and imposing fines on schools, restaurants, and garages for recorded violations.
These measures have recalled the stringent protocols associated with the COVID-19 pandemic, sparking discontent among some segments of the population, despite intense awareness campaigns accompanying the effort that called for “full public mobilization” and assured that the virus is “preventable, controllable, and treatable.”
The response included innovative measures, such as an app to monitor mosquito density in neighborhoods, breeding fish that feed on mosquito eggs and larvae in public water bodies, and releasing around forty million sterile male mosquitoes to break the breeding cycle. Drones have also been deployed for spraying pesticides over residential areas, raising scientific concerns about insect resistance to pesticides and the potential risks to ecological balance.
Despite the rapid spread of the outbreak, the official Xinhua News Agency reported on August 19 that health authorities noted signs of improvement in Foshan, where daily infection numbers have dropped from approximately 600 to about 100 cases. However, experts warned that climate change could prolong the mosquito breeding season in southern China, potentially making diseases like Chikungunya and dengue endemic, highlighting the need for increased investment in long-term preventive strategies.
