ADVERTISEMENT Today: The CDC director and other top health officials spread the word that vaccinated people largely do not need to worry about the delta strain. A federal judge temporarily blocked Indiana's abortion "reversal" law, and Anthony Fauci We’ll start with the delta strain: How worried should you be about the delta variant? CDC director said vaccinated people are 'safe' and do not need to wear masks. Some experts have differing advice: The question of mask wearing has come back to the forefront given recommendations from Los Angeles County health officials, and from the World Health Organization, that even fully vaccinated people should continue to wear masks indoors in public as a precaution due to the rise of the highly transmissible delta variant of the virus.