Updates to the Advisory Committee on Immunization Practices (ACIP) Flu Vaccine Recommendations for the 2023-2024 season

A couple of things are different for the 2023-2024 influenza (flu) season:

• The composition of flu vaccines has been updated. Flu vaccines for the U.S. 2023-2024 season will contain the following:
  Egg-based vaccines
  • an A/Victoria/4897/2022 (H1N1)pdm09-like virus; (Updated)
  • an A/Darwin/9/2021 (H3N2)-like virus;
  • a B/Austria/1359417/2021 (B/Victoria lineage)-like virus; and
  • a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus.

• Cell- or recombinant-based vaccines
  • an A/Wisconsin/67/2022 (H1N1)pdm09-like virus; (Updated)
  • an A/Darwin/6/2021 (H3N2)-like virus;
  • a B/Austria/1359417/2021 (B/Victoria lineage)-like virus; and
  • a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus.
  • These recommendations include one update compared to the 2022-2023 U.S. flu vaccine composition. The influenza A(H1N1)pdm09 vaccine virus component was updated for egg-based and cell- or recombinant-based flu vaccines.

• People with egg allergy may get any vaccine (egg-based or non-egg-based) that is otherwise appropriate for their age and health status. Previously, it was recommended that people with severe allergy to egg (those who have had any symptom other than hives with egg exposure) be vaccinated in an inpatient or outpatient medical setting. Beginning with the 2023-2024 season, additional safety measures are no longer recommended for flu vaccination of people with an egg allergy beyond those recommended for receipt of any vaccine, regardless of the severity of previous reaction to egg. All vaccines should be given in settings where allergic reactions can be recognized and treated quickly.

Projected U.S. Flu Vaccine Supply for the 2023-2024 Season

• Vaccine manufacturers have projected that they will supply the United States with as many as 156.2 million to 170 million doses of influenza vaccines for the 2023-2024 season. These projections may change as the season progresses.
  • All flu vaccines for the 2023-2024 season will be quadrivalent (four-component).
  • Most will be thimerosal-free or thimerosal-reduced vaccines (91%), and about 21% of flu vaccines will be egg-free.

To learn more, please visit https://www.cdc.gov/flu/season/faq-flu-season-2023-2024.htm.

Brain health and physical health are both important, especially as we age. A recent CDC study found that people with one or more chronic health conditions were more likely to report worsening or more frequent memory problems, also called subjective cognitive decline (SCD).

Chronic health conditions included in the report were diabetes, heart disease, arthritis, stroke, chronic obstructive pulmonary disease (COPD), asthma, and kidney disease. SCD was most common among adults with COPD or heart disease, or who had had a stroke.

Worsening or more frequent confusion or memory loss, combined with chronic health conditions, can make it especially hard to live independently and do everyday activities like cooking, cleaning, managing health conditions and medicines, and keeping medical appointments. This may lead to worse health, and preventable hospitalizations or more severe memory loss or confusion. In some cases, SCD may put people at greater risk for Alzheimer’s disease.

What Can People With Memory Loss and Chronic Health Conditions Do?

It’s important to talk to your healthcare provider. Researchers found that only half of adults with SCD and a chronic condition had discussed their memory loss with a health care professional. Early diagnosis of memory loss is especially important for people with chronic health conditions. Getting checked by your healthcare provider can help determine if the symptoms you are experiencing are related to dementia, including Alzheimer’s disease, or a more treatable condition such as a vitamin deficiency or medication side effects. Early diagnosis also provides an opportunity to participate in clinical trials, and more time to plan for the future.

8 Ways to Help Improve Your Brain Health

There is growing scientific evidence that healthy behaviors, which have been shown to prevent cancer, diabetes, and heart disease, also may reduce risk for SCD. Here are eight steps you can take for a healthy body and healthier brain.

1. Quit Smoking—Quitting smoking now improves your health and reduces your risk of heart disease, cancer, lung disease, and other smoking-related illnesses. Free quitline: 1-800-QUIT-NOW (1-800-784-8669).
2. Prevent and Manage High Blood Pressure—Tens of millions of adults in the United States have high blood pressure, and many do not have it under control. Learn the facts.
3. Prevent and Manage High Cholesterol—Nearly 1 in 3 American adults has high cholesterol. Learn how to manage your cholesterol levels and lower your risk.
4. Maintain a Healthy Weight—Healthy weight isn’t about short-term dietary changes. Instead, it’s about a lifestyle that includes healthy eating and regular physical activity.
5. Get Enough Sleep—A third of American adults report that they usually get less sleep than the recommended amount.
6. Stay Engaged—There are many ways for older adults to get involved in their local community. Here are some activities to consider.
7. Manage Blood Sugar—Learn how to manage your blood sugar if you have diabetes.
8. If You Drink, Do So in Moderation—Learn about alcohol use and your health.

To learn more, please visit https://www.cdc.gov/aging/publications/features/healthy-body-brain.html.

As we age, our brains change, but Alzheimer’s disease and related dementias are not an inevitable part of aging. In fact, up to 40% of dementia cases may be prevented or delayed. It helps to understand what’s normal and what’s not when it comes to brain health.

Normal brain aging may mean slower processing speeds and more trouble multitasking, but routine memory, skills, and knowledge are stable and may even improve with age. It’s normal to occasionally forget recent events such as where you put your keys or the name of the person you just met.

Symptoms of Dementia or Alzheimer’s Disease

In the United States, 6.2 million people age 65 and older have Alzheimer’s disease, the most common type of dementia. People with dementia have symptoms of cognitive decline that interfere with daily life—including disruptions in language, memory, attention, recognition, problem solving, and decision-making. Signs to watch for include:

• Not being able to complete tasks without help.
• Trouble naming items or close family members.
• Forgetting the function of items.
• Repeating questions.
• Taking much longer to complete normal tasks.
• Misplacing items often.
• Being unable to retrace steps and getting lost.

Conditions That Can Mimic Dementia

Symptoms of some vitamin deficiencies and medical conditions such as vitamin B12 deficiency, infections, hypothyroidism (underactive thyroid), or normal pressure hydrocephalus (a neurological condition caused by the build-up of fluid in the brain) can mimic dementia. Some prescription and over-the-counter medicines can cause dementia-like symptoms. If you have these symptoms, it is important to talk to your health care provider to find out if there are any underlying causes for these symptoms.

For more information, see What Is Dementia?

How is Dementia Diagnosed?

A healthcare provider can perform tests on attention, memory, problem solving and other cognitive abilities to see if there is cause for concern. A physical exam, blood tests, and brain scans like a CT or MRI can help determine an underlying cause.

What To Do If a Loved One is Showing Symptoms

Talk with your loved one about seeing a health care provider if they are experiencing symptoms of Alzheimer’s dementia to get a brain health check up.

Be Empowered to Discuss Memory Problems

More than half of people with memory loss have not talked to their healthcare provider, but that doesn’t have to be you. Get comfortable with starting a dialogue with your health care provider if you observe any changes in memory, or an increase in confusion, or just if you have any questions. You can also discuss health care planning, management of chronic conditions, and caregiving needs.

To learn more, please visit https://www.cdc.gov/aging/publications/features/dementia-not-normal-aging.html.

To learn more about the Alzheimer’s Association, please visit Alzheimer’s Association | Alzheimer’s Disease & Dementia Help