We're peaking at >2 million infections/day.
🔹1 in 23 people are actively infectious today
🔹1 in 3 people in the U.S. will be infected during the peak two months
🔹2nd biggest U.S. surge all-time
#MaskUp #VaxUp
2/ Before diving into the #Covid forecast, know that YOU can make a difference!
We will soon apply for a large research grant to help people with #cancer across the U.S. reduce their risk of negative Covid outcomes.
3/ In the U.S. Covid #surge, it's not just the peak, it's the width of the mountain.
This is the 2nd highest peak all-time, but it's also brutally long. 1 in 3 people in the U.S. will get infected during the highest two months of transmission. 43% will get infected in the highest 3 months of transmission. Forecasted dates noted.
Those 142 million infections would conservatively translate into an eventual 7 million clinically significant #LongCovid cases.
Transmission will drop considerably from early February through late March. On February 13, 2.9% of the population will be actively infectious, falling to 2.1% by February 24, 1% by mid-March, and bottoming out around 0.7% in late March. These very long-range projections are more historical medians rather than precise forecasts.
4/ Zooming out to the entire pandemic, you can witness the brutality of the current #Covid #surge.
2nd biggest peak all-time. It also makes the horrific 2023 late-summer wave look like nothing.
Transmission is worse in the U.S. today than during 96.5% of the days of the pandemic. We're already at 16 million Covid infections in 2024, which will conservatively ultimately result in 800 thousand #LongCovid cases.
All that remains to be settled is whether peak daily transmission will be closer to 2 million infections/day or 2.2 million per day.
You can read about the Turtle and Cheetah forecasting models in the online report. They basically adjust for the fact that Biobot has been retroactively correcting wastewater levels marginally upward. Perhaps locations with high transmission have more people out sick and report late.
5/ U.S. Covid Risk Table for the week of Jan 8, 2024.
In a gathering of 15-20 people, it's a coin toss whether at least one person has infectious Covid.
Avoid large gatherings. #VaxUp #MaskUp. DIY fit test. Turn that thermostat from 'auto' to 'on,' or better yet, get outside or remote. Add supplemental air cleaning with HEPA and #DIYAirCleaners. Keep testing.
6/ Warning: U.S. schools likely have very high Covid transmission throughout January 2024.
The following table shows the risk that anyone would have COVID in classrooms, based on varying size, date, and region.
Left table: The left table shows the chances someone is infectious with Covid based on class size and date. Class size matters considerably. Date does not (for January), as we'll be riding out the peak of the surge, which is more like a month-long plateau. In a class of 8, there's about a 25-30% chance someone would have Covid at any given time in January, absent any precautions using screening, testing, isolation, or quarantine. In a college class of 50, it's more like an 85-90% chance.
Right table: We do not model separately by region. However, if you track Biobot, you'll note levels are higher in the Northeast and Midwest than in the South and West. If we assume the same ratio for Jan 8, this table shows you how the risk varies geographically. The true risk levels could be a bit higher in the South/West if they catch up. The geographic comparisons arguably are not particularly useful because the regional differences tend to be more about the number of specific counties in an extreme surge, while most counties in a region follow the national average. If good local data from Verily or elsewhere, consider that, but otherwise focus more on national numbers. Even using these estimates for the South/West, they are very bad. A class of 32 would have a >50% chance of COVID, absent any screening/testing/isolation/quarantine precautions.
Summary: Schools are often among the highest risk settings for COVID transmission because of the high density of people in classrooms, presenteeism, discontinuation of testing programs, lack of masking requirements, use of ill-fitting and low-quality masks, low vaccination rates, low air cleaning rates, and an emphasis on droplet dogma (handwashing, Lysol) for an airborne virus. As indicated in the letter linked in the next section, the solution is to re-implement comprehensive COVID mitigation, as the U.S. is in the 2nd-largest COVID surge of the pandemic.
Letter: Dr. Hoerger has prepared a letter for parents seeking to advocate for better COVID mitigation at schools. Parents can consider attaching the letter as an appendix to their own letter. Alternatively, they can replace Dr. Hoerger’s letter with their own and use the tables provided, or any graphics from this website. No permission is required to use any of the graphics or data. pmc19.com/data/pmc_schoo…
7/ International COVID Statistics
Independent estimates across 3 countries show that 4.2-5.0% of residents are actively infectious with Covid.
The U.S. numbers are now up to date, while the estimates in Canada and the U.K. are delayed by the holidays.
8/ Toll of the COVID-19 pandemic in the U.S. in 2023
There were an estimated >250 million infections in the U.S. in 2023.
If assuming within-year reinfections were 0-30% of total reinfections, an estimated 53-76% of the U.S. population was infected at least once in 2023.
With a conservative estimate that 5% of infections will result in clinically significant Long Covid, that’s >12 million new #LongCovid cases.
These outcomes are the product of a highly-risky laissez-faire public health response to widespread viral transmission that contradicts the precautionary principle.
9/ Full PMC COVID-19 Forecasting Dashboard for the Week of Jan 8, 2024
Here's the entire dashboard. You can read the full report, which includes supplemental tables and analysis online: pmc19.com/data
10/end
Thank you to everyone engaged in pandemic advocacy.
The current surge demonstrates that public policy underlies human behavior that will continue to guide high transmission, viral evolution, and continued waves.
🌍Want to track COVID transmission accurately worldwide?
This PMC thread walks you through leading dashboards with information more up to date than WHO & EU directories.
🧵 1/
The Pandemic Mitigation Collaborative (PMC) Dashboard provides weekly COVID updates for the U.S., using wastewater surveillance derived case estimation models and analytic forecasting.
Our international directory includes official government dashboards & those developed by citizen scientists.
We exclude countries that have stopped reporting in the past 2-12 months even if on EU or WHO lists. We also exclude low-quality data from opt-in testing programs.
🧵 3/
🔥Biggest uptick since Jan
🔥1 in 167 actively infectious
🔥>2 million weekly infections
🔥700-1,200 resulting excess deaths from weekly infections
Track transmission closer to home w/our new state & international resources 👇
🧵1/6
PMC COVlD Dashboard, Jun 23, 2025 (U.S.)
🔹With >90% probability, we have entered the 11th COVlD wave.
🔹In a room of 50 people, there is already a 1 in 4 chance of an exposure.
🔹We expect nearly 15 million infections in the next month, and rising.
🧵2/6
PMC COVlD Dashboard, Jun 23, 2025 (U.S.)
We continue to expect transmission to break 500,000 daily infections in the U.S. around July 9th.
This is the same prediction as last week, as the forecast was dead on. Yet, there is considerably uncertainty around this timing.
Current transmission (red line) closely tracks that of summer 2023 (yellow line).
We expect to break 500k daily infections between July 9 and the end of July. Our current forecast...
2) PMC COVlD Dashboard, June 16, 2025 (U.S.)
Our current forecast is a bit more aggressive, predicting breaking 500k daily infections by July 9. The 2023 trend suggests end of July.
The 95% confidence interval shows large variation. Note that...
3) PMC COVlD Dashboard, June 16, 2025 (U.S.)
Note that CDC and Biobot both had retroactive corrections to last week's data, meaning the relative "lull" will last a little longer than the uncorrected data suggested. No big news on NB.1.8.1.
1) Here's a quick example of how the federal government is censoring the best scientific research. It's not just cuts to ongoing research.
It's new grant submissions too...
2) In January, I re-submitted a promising Covid/cancer grant to a non-federal funder. Hundreds of pages. Hundreds of hours of work. The best proposal I've submitted as a scientist.
Out of curiosity, I used Sean Mullen's Scan Assist tool to see how many banned words it had...
3) The proposal had 1,750 banned words. No big deal -- they're non-federal.
BUT I had planned to submit a smaller version to NIH this month as a "back up." Impossible!
It's not a matter of using a thesaurus or the find/replace command. The grant is on *Covid*...
CDC wastewater surveillance data show transmission rising. This is our forecast if transmission growth follows typical patterns.
The high & low estimates could be thought of as optimistic & pessimistic scenarios for NB.1.8.1.
2) PMC COVlD Dashboard, June 9, 2025
Notice that current transmission (red line, lower left) tracks closely with two years ago (yellow), slightly below the median (gray), and not far below last year (orange).
Consider each of these trajectories realistic scenarios.
3) PMC COVlD Dashboard, June 9, 2025
All indications are that we are headed into the start of an 11th national wave in the U.S.
We could percolate near the lull point another couple weeks (fingers crossed), but that scenario is becoming less likely.
National COVlD transmission recently fell to its lowest levels since the pre-Delta era.
It's go-time for many who have delayed medical appointments. The situation will likely get much worse in Jul/Aug.
2/ PMC COVlD Dashboard, June 2, 2025 (U.S.)
An estimated 1 in 211 are actively infectious. Most states are "low" or "very low" per CDC.
The situation remains serious even in a relative "lull." >1.5 million weekly estimated infections to result in 600-900 excess deaths.
3/ PMC COVlD Dashboard, June 2, 2025 (U.S.)
By the end of the month, we forecast an increase to 450k daily infections. If NB.1.8.1 takes off, closer to 600k. If overhyped, percolating only slightly higher.