Hover a state for its numbers, click to explore it. Press ▶ to watch the rollout.
New cases per 100,000 people per day
7-day average, with a 2-week trend forecast from the selected week
Share of people fully vaccinated
Percent of the population
US doses by vaccine maker
What the original app told people in May 2021
Carried over from the 2021 "More information" page, which summarized the CDC at the time. Kept as a snapshot of what was known then, not current medical advice.
The vaccines
- Pfizer-BioNTech: 2 shots for full effectiveness
- Moderna: 2 shots for full effectiveness
- Johnson & Johnson: 1 shot for full effectiveness
- Eligibility: 12 and older, Pfizer-BioNTech only
Known then
- Effective in preventing death and severe illness
- Fully protected 2 weeks after the final shot
- No vaccine is 100% effective
Not known yet
- How effective they are against variants
- How effective they are for people with weakened immune systems
- How long protection lasts
The data above answers the first question: the Omicron wave of winter 2021–22 brought the highest case counts of the pandemic, even after most people were vaccinated.