Understanding Influenza Symptoms as the US Prepares for ‘Catastrophic’ K Variant

Here are the symptoms of influenza to keep an eye on as the United States prepares for a new flu strain causing a rise in global cases.

This time of year often brings with it a wave of illnesses, and it seems the flu season has begun early in some regions. Countries like Canada, Australia, the UK, and Japan are witnessing an increase in flu cases.

The surge is attributed to a strain known as subclade ‘K’ of H3N2, a variant of influenza A, according to CNN. Following recent holiday gatherings, respiratory illnesses are on the rise in the US, with Christmas approaching.

An A&E consultant in the UK mentioned to The Independent that the flu is spreading so quickly in hospitals, describing it as “by far the worst winter that we have had in my time as a consultant.” They added, “Without a shadow of a doubt, in the last three weeks, it has gone from a bad winter to this is beyond catastrophic.”

Similarly, the situation is concerning in the United States.

At least 14 regions in the US report moderate to high flu activity, particularly in the Northeast. Flu cases in New York have begun increasing two weeks earlier than usual, with hospitalizations doubling each week for two consecutive weeks, according to Dr. James McDonald, commissioner of the New York State Department of Health.

A map from the Center for Disease Control and Prevention (CDC) highlighted the states most affected, with data indicating an 8.1 percent rise in cases.

Influenza is a viral infection affecting the throat, nose, and lungs that can spread rapidly. The primary distinction between the flu and a cold is that flu symptoms usually manifest within two to three days of exposure to the virus.

In contrast, colds typically develop more slowly, and individuals generally feel significantly worse with the flu than with a cold.

The Mayo Clinic has identified eight key symptoms to watch out for. They are:

Most individuals can manage symptoms at home with rest, fluids, and painkillers. However, if you’re considered vulnerable, it’s crucial to seek assistance promptly to avoid complications.

Individuals with health conditions like asthma, heart disease, diabetes, or a weakened immune system are considered vulnerable, along with those over the age of 65, children, and pregnant women.

Severe complications of influenza can include lung infections such as pneumonia, airway inflammation like bronchitis, and sepsis, a dangerous response to infection.

Other potential complications could involve toxic shock syndrome, acute respiratory distress syndrome, and rhabdomyolysis, which is muscle damage.

It can also exacerbate existing chronic conditions, such as asthma and kidney issues.

The Mayo Clinic also highlights several emergency flu symptoms that necessitate immediate medical attention.

In adults, these may include:

For children, the symptoms could also include:

If there are any concerns, it is recommended to seek medical assistance without delay.