The chill of the winter months often comes as a respite from the intense heat of a San Antonio summer. Yet, this cooler season brings with it a significant shift in our daily routines, most notably an increase in indoor activities. This change can have profound health implications, particularly as it heightens the risk of transmission of respiratory illnesses such as influenza, COVID-19, and respiratory syncytial virus (RSV).
As we cozy up indoors to escape the cold, we inadvertently create environments that are conducive to the spread of viruses. The Centers for Disease Control and Prevention (CDC) notes that the flu season peaks between December and February, largely due to more people gathering indoors during this time. Similarly, enclosed spaces with limited air circulation play a significant role in the transmission of COVID-19 and other respiratory viruses.

For older adults, who are often more vulnerable due to weakened immune systems or preexisting conditions, the risk is even more pronounced. Recognizing this, healthcare guidelines have been updated to include recommendations for FDA-approved vaccines specifically targeting RSV, such as Arexvy and Abrysvo. These vaccines reflect a growing recognition of the severe impacts of RSV infections in the elderly population.
Respiratory syncytial virus, while less publicized than its viral counterparts such as influenza and COVID-19, poses a significant threat, particularly to the elderly. According to the World Health Organization (WHO), RSV leads to approximately 177,000 hospitalizations each year among adults aged 65 years or older in the United States alone. Moreover, RSV is responsible for about 14,000 deaths annually among older adults in this age group.
The introduction of rapid RSV testing has been pivotal in highlighting the virus’s impact not only on infants and children—traditionally considered the most affected groups—but also on adults. Studies have shown that RSV can lead to severe and sometimes fatal pneumonia in older adults. These findings underscore the importance of vaccination and preventive measures during the winter months.
Given the heightened risk associated with respiratory illnesses during colder weather, it is crucial for older adults and those in close contact with them to consider vaccination. The CDC emphasizes the benefits of seasonal flu vaccines and the COVID-19 vaccine series, which have been shown to reduce the risk of illness, hospitalizations, and death. Similarly, the new RSV vaccines offer hope in reducing the burden of this often overlooked respiratory virus.