Neither of my friends who had pneumonia are over 55 or travel in the same circles.
“Pneumococcal pneumonia can be passed from person to person. You can catch it from a cough or close contact.
Many people think its a cold or the flu, but its not.
Unlike a cold or the flu, which are caused by viruses, pneumococcal pneumonia is caused by bacteria. Symptoms can be severe and hit you without warning. In fact, it can take weeks before you feel like yourself againthe fatigue can make it hard to get through the day.”
https://www.knowpneumonia.com/about-pneumococcal-pneumonia
Can illegals be the cause?
There are two good vaccines available to protect against bacterial pneumonia.
It's best to get both: