News Daily cases 10% higher in US this week; J&J vaccine may protect against delta variant: COVID-19 updates July 1, 2021July 1, 2021 Elinor Aspegren, USA TODAY Comments Off on Daily cases 10% higher in US this week; J&J vaccine may protect against delta variant: COVID-19 updates A top U.S. official suggested that J&J vaccine likely protects against the delta variant. Michigan announces vaccine sweepstakes. Latest COVID news.