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    From the Coronavirus to the Arbovirus: WHO launches bid to stop a new pandemic

    HealthFrom the Coronavirus to the Arbovirus: WHO launches bid...
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    From the Coronavirus to the Arbovirus: WHO launches bid to stop a new pandemic

    The UN health agency has launched its plan to prevent a hitherto unfamiliar virus-caused pandemic from Arbovirus strain that causes life-threatening mosquito-borne illnesses, such as Dengue, Yellow fever, Chikungunya and Zika.

    “Arboviruses” might be an unfamiliar term, but this group of viruses can cause havoc, as it does for almost four billion people. To this end, the World Health Organisation (WHO) on Thursday, launched a plan to prevent the mosquito-borne viruses from causing a new pandemic. The group of viruses cause diseases like Dengue, Yellow fever, Chikungunya and Zika.

    The diseases represent an ever-present and massive health threat in tropical and sub-tropical countries, including large parts of SouthAsia where Dengue and Chikungunya have assumed life-threatening proportions.

    “The frequency and magnitude of outbreaks of these arboviruses, particularly those transmitted by Aedes mosquitoes, are increasing globally, fuelled by the convergence of ecologic, economic, and social factors,” says the WHO.

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    Endemic suffering

    Every year, dengue fever infects 390 million people in the 130 countries where it is endemic. It can cause haemorrhagic fever and death.

    Yellow fever poses a high risk of outbreaks in 40 countries and causes jaundice and severe haemorrhagic fever and death.

    Chikungunya is less well-known, but it is present in 115 countries and cause severe and joint-disabling arthritis.

    Zika virus gained worldwide notoriety in 2016 when it was found to cause birth defects such as microencephaly. It has been detected in at least 89 countries.

    Although there is a vaccine for Yellow fever, for the rest, the best protection is to prevent mosquito bites in the first place, WHO believes.

    Strategic plan

    The Global Arbovirus Initiative is an integrated strategic plan to tackle emerging and re-emerging arboviruses with epidemic and pandemic potential focusing on monitoring risk, pandemic prevention, preparedness, detection and response, and building a coalition of partners. The initiative is a collaborative effort between the World Health Emergencies Programme, the Department of Control of Neglected Tropical Diseases, and the Immunization, Vaccines and Biologicals Department.

    Welcoming the move, Dr. Mike Ryan, head of the World Health Organization’s Emergency Programme, explained that the scheme would allow health authorities to tackle the “broad but related threats” posed by Dengue, Yellow fever, Chikungunya and Zika, in different parts of the world.

    “For each of these diseases there have been gains in different aspects of surveillance response, research and development,” he said. “But sustainability is often limited to the scope and duration and scope of disease-specific projects.

    “There is an urgent need to re-evaluate the tools at hand and how these can be used across diseases to ensure efficient response, evidence-based practice, equipped and trained personnel and engagement of communities.”

    The focus of the Global Arbovirus Initiative will be to concentrate resources on risk monitoring, pandemic prevention, preparedness, detection and response, the UN health agency said.

    It insisted that international action is essential, given the “frequency and magnitude of outbreaks” of arboviruses, particularly those that are transmitted by Aedes mosquitoes.

    Their reach is growing, too, the WHO warned, fuelled by climate change, population growth and increasing urbanisation.

    Health inequality

    Dr Ryan noted that interest in the WHO initiative had been strong in the two-year run-up to Thursday’s launch, despite the pressures of the ongoing COVID-19 pandemic, as there are growing concerns about arboviral disease spread in large regional epidemics, “affecting those populations least-equipped to deal with them”.

    Key to WHO’s plan is to build the capacity to deal with arboviral pathogens at front-line health centres, as well as at the regional and global level.

    “WHO stands ready to lead and support these strategic pandemic preparedness plans and to build a global coalition of countries and partners to tackle the increased risk posed by these pathogens,” Dr Ryan insisted.

     

    Image: S. Torfinn  / WHO

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