flu-like symptoms and emerge unscathed from the infection, some require hospitalization and intubation due to respiratory failure and varying levels of organ support.
For other people, it is fatal.Termed “interindividual variation,” health experts have largely attributed these differences in disease progression and outcome to differences in immune function.
Older adults, men, those with preexisting chronic health conditions, and people from minoritized communities are more likely to have severe COVID-19 and die. When it comes to matters of immunity, however, there is another factor that comes into play: vaccination history.Vaccines are key elements that train the immune system to fight a variety of pathogens that cause people to fall ill..