Vaccines work by training our immune systems to recognize and combat pathogens, such as viruses. However, over time, the effectiveness of vaccines can wane, necessitating booster shots to reinforce immunity. For older adults, whose immune systems may not respond as robustly as those of younger individuals, booster shots play a critical role in maintaining protection against infectious... https://rollbol.com/blogs/1915529/Moderna-Booster-Better-Protects-Older-People-Against-Virus