Latest on Avian Flu: Updates from California and Missouri
Table of Contents
tracking H5N1 in humans, mammals, and livestock.
Recent reports indicate ongoing monitoring and investigations related to the H5N1 avian influenza virus in the United States. Cases have been confirmed in both humans and animals, prompting responses from state and federal agencies.
Human Case in Missouri
In September 2024, a human case of H5N1 bird flu was confirmed in Missouri. according to reports, the individual was hospitalized due to significant underlying medical conditions and presented with chest pain [[2]]. the Centers for Disease Control and Prevention (CDC) provided technical assistance to Missouri in the inquiry [[2]].
The case was in a person who was hospitalized consequently of significant underlying medical conditions.
Avian Flu in California Mammals and Livestock
As of January 7, 2025, the California Department of Food and Agriculture (CDFA) confirmed new cases of H5N1 bird flu in California dairy herds [[3]]. Following investigations and disease detection by the California Animal Health and food Safety laboratory System (CAHFS), the U.S. Department of Agriculture’s (USDA) also participated in the response. The CDFA also released 100 fully recovered dairies from quarantine [[3]].
Frequently Asked questions
- What is avian influenza (bird flu)?
- avian influenza is a disease caused by viruses that occur naturally in wild aquatic birds and can infect domestic poultry and other animals [[1]].
- Can humans get bird flu?
- Yes, even though it is indeed not common. Sporadic human infections with bird flu viruses have been reported [[2]].
- What are the symptoms of bird flu in humans?
- Symptoms can vary but may include fever, cough, sore throat, and in some cases, chest pain and respiratory distress [[2]].
- How is bird flu transmitted to humans?
- Bird flu is typically transmitted to humans through direct contact with infected birds or contaminated environments [[5]].
- What is being done to control the spread of bird flu?
- Measures include surveillance, quarantine of infected animals, and in certain specific cases, culling of poultry flocks [[3]].
Sources
- CDC – avian Influenza (Bird Flu)
- WHO – Influenza (Avian and other zoonotic)
- FluTrackers – US – human H5N1 bird flu case confirmed in Missouri
- FluTrackers – california – Avian flu in mammals and livestock 2025
- WHO – Disease Outbreak News
- CDC – Global Summary of Human Infection with Avian Influenza A Viruses
- CDC – Details on Avian Influenza
