“So-called natural immunity”
NYT Health on Twitter: “So-called natural immunity varies from patient to patient, scientists say. Immunization is still the best choice after recovering from the disease. https://t.co/l2tcIEet35” / Twitter
What does “so-called” mean? Because humans do not have an immune system? This is confusing wording.
But heck, everything’s fine since drug overdose deaths reached a new all time high.