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A study suggests Pfizer and Moderna vaccines may provide long-term immunity, potentially eliminating the need for booster shots. Researchers observed a persistent immune response in individuals who received two doses of the Pfizer vaccine. Additionally, French researchers found that most COVID-19 patients who lost their sense of taste and smell recovered within eight months. The exact cause of sensory loss is still unknown, but it may involve neurons or blood molecules.

What percentage of patients fully recovered their taste and smell by 8 months?

What do researchers suspect might be the reason COVID patients lose their sense of taste and smell?