COVID-19 has become less of an urgent threat than it was in 2019 largely because of vaccines and growing immunity from natural infections, but antiviral treatments have also changed the course of the disease. The most popular of these is nirmatrelvir-ritonavir, sold under the brand name Paxlovid, which the U.S. Centers for Disease Control and Prevention (CDC) recommends for older people and anyone over age 12 who is at higher risk of COVID-19 complicationsคำพูดจาก สล็อตเว็บตรง. But people taking the drug have reported incomplete recovery, or testing positive again after testing negative once they finished the five-day course of the oral medication.

In a study published in …