Mexico has confirmed its first case of influenza A (H3N2) wiht a K subclade, a respiratory virus currently circulating in Canada, the United States, and Asia, according too the Secretary of Health [[1]]. While health officials report the initial patient has fully recovered following antiviral treatment, the confirmation-which comes after a recent denial of cases within the country-underscores growing global concerns about the variant as the influenza season gains momentum. The Secretary of Health is emphasizing preventative measures,including widespread vaccination,to mitigate potential impacts and protect vulnerable populations amid rising cases worldwide.
Mexico has confirmed its first case of influenza A (H3N2) with a K subclade, a variant of the flu that has been gaining attention due to increased transmission rates in other parts of the world. The case was confirmed by the National Institute of Respiratory Diseases on Friday, according to the Secretary of Health.
Health officials report the patient responded well to antiviral treatment and has fully recovered. This confirmation comes shortly after the Secretary of Health, David Kershenobich, stated on Thursday evening that no cases of this “super flu” had been identified in the country. The emergence of this variant is being closely monitored globally as influenza season approaches.
While cases are rising in countries like the United States, Canada, and Europe, the Secretary of Health emphasized that this variant shares similar characteristics with the seasonal influenza that circulates annually. “Its clinical management is the same and the main preventative measure is vaccination,” the department assured. This means existing treatments and preventative strategies should remain effective.
The Secretary of Health is urging citizens to get vaccinated against influenza, COVID-19, and pneumococcal disease at health centers and vaccination posts ahead of the winter season. “These vaccines are effective in reducing risks, preventing complications and hospitalizations, and protecting health, especially for girls and boys, older adults, pregnant women, healthcare personnel, and people with comorbidities,” officials stated.
Individuals who test positive for the flu are advised to seek medical attention and, if necessary, receive antiviral treatment. The use of face masks and adherence to isolation measures are also recommended to limit further spread. The Secretary of Health continues to actively monitor the epidemiological situation and pledged to provide timely, clear, and transparent updates to the public.
The news follows a call from the Pan American Health Organization (PAHO) on Monday for countries in the Americas to strengthen their preparedness plans in response to increasing influenza and other respiratory viruses in the northern hemisphere. PAHO recommended bolstering vaccination efforts, improving timely diagnosis, and implementing preventative measures to protect vulnerable populations and prevent healthcare system overload.
Globally, influenza cases began to increase at the end of November. According to PAHO, the A(H3N2) type, including the K subclade, is predominant in Canada and the United States, and has also been widely detected in Asia. This variant has demonstrated a heightened capacity for transmission, a reduced response to the seasonal vaccine, and more intense symptoms, including high fever, headache, sore throat, dry cough, muscle pain, extreme fatigue, nasal congestion, general malaise, and loss of appetite. These symptoms can be particularly severe in young children, older adults, and individuals with chronic illnesses.
