What Is Herd Immunity?

The existence of COVID-19 has introduced us to many new terms that we may not completely understand. One of those terms is “herd immunity.”

Herd immunity describes how the spread of a contagious disease can be controlled after a large enough portion of the population, (referred to as “the herd”) becomes immune.

A disease is most contagious when everyone in the community is at risk of contracting it. If a sizable percentage becomes immune however, it makes it harder for the disease to reach those susceptible because the herd blocks its ability to reach them.  As a result, the entire community becomes better protected.

There are two ways to achieve herd immunity: vaccination or infection and recovery.

  • Vaccination – Vaccines create immunity without causing illness or resulting complications. Vaccines have successfully controlled deadly contagious diseases such as smallpox, polio, diphtheria, rubella and many others. Herd immunity by vaccination protects people who are unable to be vaccinated due to age or other conditions.
  • Natural infection – Herd immunity can also be reached when a sufficient number of people in the population have recovered from a disease and have developed antibodies against future infection. For example, those who survived the 1918 flu (influenza) pandemic were later immune to infection to the H1N1 flu, a subtype of influenza A.

The percentage of a community that needs to be immune in order to achieve herd immunity varies from disease to disease. The more contagious a disease is, there will need to be a greater proportion of the population that is immune to the disease to stop its spread. For example, the measles is a highly contagious illness, therefore it’s estimated that 94% of the population must be immune to interrupt the chain of transmission.

It is important to note that while herd immunity can reduce the risk of getting a disease, it does not prevent it. Until an effective COVID-19 vaccine is developed, it is important to follow all safety guidelines to protect against the transmission of the virus, including:

  • Avoiding large events and mass gatherings.
  • Avoiding close contact with others, (within 6 feet).
  • Washing your hands often with soap and water for at least 20 seconds, or use an alcohol-based hand sanitizer that contains at least 60% alcohol.
  • Wearing a face mask or covering in public spaces.
  • Covering your mouth and nose with your elbow or a tissue when you cough or sneeze.
  • Avoiding touching your eyes, nose and mouth.
  • Avoiding sharing dishes, glasses, bedding and other household items if you’re sick.
  • Cleaning and disinfect high-touch surfaces daily.
  • Staying home from work, school and public areas if you’re sick, unless you’re going to get medical care.

All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.

Our Post-COVID Care Center Is Now Open

During the early stages of the COVID-19 pandemic, most health authorities were operating under the belief that the virus, while extremely dangerous for some, was a short-term illness. Most young, healthy individuals who tested positive for the coronavirus were told to expect to sustain a variety of symptoms that could last anywhere from two to six weeks.

Now, however, doctors are seeing a growing number of patients who are enduring lingering symptoms for an extended period of time. These patients are now being referred to as “Long Haulers.”

For long haulers, symptoms of the virus can drag on for multiple months. Some of the most common lingering symptoms include fatigue, muscle and body pain, shortness of breath, dizziness, and headaches. In addition to these physical symptoms, many long haulers are also reporting a variety of cognitive deficits, such as difficulty concentrating or focusing (commonly referred to as mental fog). Other patients may also experience mental health issues such as anxiety and depression.

With nearly a quarter of a million reported cases of COVID-19 in New York City over the past six months, many of the City’s residents are still experiencing the long-term effects of the virus. To help these patients, the MediSys Health Network (comprised of Jamaica and Flushing Hospital Medical Center, the Trump Pavilion for Nursing and Rehabilitation, and a network of community-based MediSys ambulatory care centers) has opened a Post-COVID Care Center in Hollis Tudors, Queens.

At this center, long haulers, as well as others experiencing post-COVID symptoms can receive specialized care from a multi-disciplinary group of qualified physicians. “We were compelled to help those in our community who are still dealing with the effects of the virus” stated Dr. Alan Roth, Chairman of Ambulatory Care and Family Medicine, who added “Queens was considered the epicenter of the coronavirus pandemic in March and April. During that time we treated thousands of patients. While the situation in our community has greatly improved recently, we know that there is still work to be done, including continuing to treat patients living with long-term symptoms.”

The MediSys Health Network’s Post-COVID Care Center provides patients with personalized, comprehensive care, coordinated by a primary care physician, who will work with other on-site specialists, including pulmonologists, neurologists, and psychiatrists, all dedicated to helping our patients better manage their condition.

For more information about our services, or to make an appointment at our Post-COVID Care center, please call  718-736-8204.

All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.