To quote veteran science writer Ed Yong’s simple yet extremely accurate words in The Atlantic, “The immune system is very complicated.” As the COVID-19 pandemic had made abundantly clear, science still doesn’t fully understand the sophisticated defense mechanisms that protect us from microbe invaders. Why do some people show no symptoms when infected with SARS-CoV-2 while others suffer from severe fevers and body aches? Why do some succumb to cytokine storms of the body’s own making? We still lack exact answers to these questions.
