What Makes Covid Omicron Variants More Contagious?

The video discusses the rapid spread of Omicron variants BA4 and BA5, which have evolved to evade immune defenses, leading to higher infection rates even among vaccinated individuals. Despite this, vaccination remains crucial as it reduces the risk of severe disease and hospitalization. The FDA is working on including Omicron components in future booster doses to enhance protection. The video also highlights the ongoing global impact of COVID-19, emphasizing the importance of booster uptake to reduce deaths.

What are the most current variants of COVID-19 mentioned in the text?

Why are Omicron variants BA4 and BA5 spreading more easily than previous variants?

What does the text say about the effectiveness of vaccines against the latest Omicron variants?

What actions are being taken to address the decreased efficacy of vaccines?

What is the estimated COVID death toll in the United States as mentioned in the text?