The World Health Organization (WHO) has released new global clinical guidelines to aid healthcare providers in diagnosing and managing arboviral diseases, including dengue, chikungunya, Zika, and yellow fever.
This marks the first time WHO is issuing a unified set of recommendations covering all four mosquito-borne illnesses, which are increasingly becoming a global health concern. According to WHO, more than 5.6 billion people are now at risk due to the expanding range of Aedes mosquitoes — the primary carriers of these viruses — driven by climate change, urbanization, increased travel, and population growth.
“These diseases are no longer confined to tropical and subtropical regions,” WHO noted. “The growing geographic reach of arboviruses poses a serious threat to global public health.”
One of the key challenges in combating arboviral infections is clinical diagnosis, as dengue, Zika, chikungunya, and yellow fever often present with similar symptoms such as fever, rash, and joint pain. In many areas, multiple arboviruses may circulate simultaneously, and limited access to diagnostic testing can make accurate identification difficult.
The newly issued guidelines are aimed at helping frontline healthcare workers deliver timely and effective care based on the latest evidence. They include detailed recommendations for treating both mild and severe cases and are applicable across various levels of the health system — from community-based and primary care settings to emergency departments and hospitals.
WHO emphasized that recognizing and managing arboviral diseases early can significantly reduce severe complications and mortality.
As arboviral outbreaks continue to spread into previously unaffected regions, the organization stressed the importance of global preparedness and capacity building within health systems.
“These guidelines represent a critical step in strengthening the ability of clinicians worldwide to respond effectively to current and future outbreaks,” WHO said.
The new guidelines are now available on WHO’s official website and are expected to serve as a key reference for health professionals, especially in regions vulnerable to arboviral transmission.
