West Nile Virus – United States
1,091 total cases of West Nile virus have been reported this year in Maricopa County, Arizona.
This accounts for almost half of the total cases in the US this year. Common symptoms include fever, headache, body aches, and muscle weakness.
There have been 79 deaths in Maricopa County. Health officials believe the rise in cases is due to the dry 2020 season followed by a very wet monsoon season that led to an abundance of standing water for mosquitoes.
Photo: Many types of mosquitoes are vectors for Jamestown Canyon virus.
West Nile virus has been the leading cause of mosquito-borne disease in the United States. No vaccines for humans exist to prevent, nor do specific medications to treat it exist.
West Nile virus is primarily transmitted by mosquitoes, mostly species of Culex and related to Zika, dengue and yellow fever viruses.
In humans, West Nile virus can cause a disease known as West Nile fever. Approximately 80% of infected people have few or no symptom, while around 20% of people develop mild symptoms (such as fever, headache, vomiting, or a rash), and less than 1% of people develop severe symptoms (such as encephalitis or meningitis)
The virus was discovered in Uganda in 1937 and was first detected in North America in 1999. West Nile Virus has been reported in Europe, Africa, Asia, Australia, and North America.
While you are here, help us with
Access to Essential Drugs
One third of children, women and men have no access to essential medicines, putting lives at risk. Hospitals frequently run out of medicines and other essential supplies. Our Med-Aid program connects hospitals with aid and ensures that they receive exactly what they need.
Access to Diagnostics
Much of today’s innovation is either not reaching or not suitable for people in developing countries.
Data to Improve Health
Faster and reactive systems to help provide lifesaving support to vulnerable communities.
Support our work. It only takes a minute but makes a world of difference!
With your help we can bring modern diagnostics and essential medicines to people in need, track disease outbreaks better and help prevent future pandemics.