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Mike Hoerger, PhD MSCR MBA Profile picture
@michael_hoerger
May 26, 2025 • 7 tweets • 3 min read • Read on X
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1) PMC Dashboard, May 26, 2025 (U.S.)

The lull exit is coming. Despite being in a lull:

🔥1 in 180 actively infectious
🔥1.9 million weekly infections
🔥>93,000 new #LongCOVID cases from the week's infections
🔥1,100 excess deaths from the week's infections

This is a "lull."
2) PMC Dashboard, May 26, 2025 (U.S.)

The forecast calls for a near-doubling in transmission the next month to 450k daily infections.

The 95% confidence interval includes flat transmission (percolating), or escalating to 650k (if NB.1.8.1 takes off). Forecasting graph, summarized in post
3) PMC Dashboard, May 26, 2025 (U.S.)

Looking at year-over-year transmission, 2025 (red) is closely tracking the median (gray).

It transmission accelerates, it could look more like last year (orange). If it slows, more like two years ago (yellow). Year-over-year graph summarized in post
4) PMC Dashboard, May 26, 2025 (U.S.)

Note that we are exiting the relative "lull" following the 10th wave in the U.S.

Let it sink in that this week's lull infections will likely result in about 1,100 deaths. Then, consider the 11th wave on the way. Current Levels for May 26, 2025 % of the Population Infectious 0.6% (1 in 180) New Daily Infections 266000 New Weekly Infections 1862000 Resulting Weekly Long COVID Cases 93,000 to 372,000 Resulting Weekly Excess Deaths 700 to 1,100 Monthly Forecast Average % of the Population Infectious 0.8% (1 in 126) Average New Daily Infections 380466.6667 New Infections During the Next Month 11414000 Resulting Monthly Long COVID Cases 571,000 to 2,283,000 Resulting Monthly Excess Deaths 4,100 to 6,800 Running Totals Infections Nationwide in 2025 68826000 Average Number of I...
5) PMC Dashboard, May 26, 2025 (U.S.)

The CDC defines the vast majority of the U.S. in "low" or "very low" transmission.

This may be true in relative comparisons, but the excess deaths remain high in an absolute sense.

Monthly Covid excess deaths surpass 9/11. Heat map using CDC data
6) PMC Dashboard, May 26, 2025 (U.S.)

Regional data show the lull likely ending with the West already in an apparent uptick.

7) PMC Dashboard, May 26, 2025 (U.S.)

Find the full PMC Dashboard at

Use, edit, improve, and share anything posted. Thank you. pmc19.com/dataFull dashboard summarized in each prior post

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More from @michael_hoerger

Mike Hoerger, PhD MSCR MBA Profile picture
Jan 25
During this 12th COVlD wave, the CDC reports 1-in-3 states have "High" or "Very High" levels.

PMC estimates the proportion of residents actively infectious (prevalence):
◾️USA: 1 in 67
◾️IA: 1 in 27
◾️MI: 1 in 25
◾️IN & CT: 1 in 23
◾️ME: 1 in 21
◾️OK & SD: 1 in 17

🧵1/ Heat map using CDC data. National PMC prevalence estimate noted; estimated incidence of 732,000 new daily infections.
On average, Americans have have 5.0 cumulative SARS-CoV-2 infections.

This week's infections are expected to result in 1/4 to 1 million new #LongCOVID conditions and ≈2,000 excess deaths.
🧵2/ Column 1: Table of state-level prevalence estimates. Highest estimates noted in the thread text. Column 2: Proportion Actively Infectious 1 in 67 (1.5%) New Daily Infections 732,000 Infections the Past Week 5,220,000 Infections in 2026 24,000,000 Cumulative Infections per Person 5.04 Long COVID Long COVID Cases Resulting 37,000 to 146,000 from New Daily Infections Long COVID Cases Resulting 261,000 to 1,040,000 from New Weekly Infections Excess Deaths Ex...
The wave peak is now estimated >10% higher than last week at 1.2 million new daily infections, nearly double the Delta wave.

We expect sustained high transmission (≈600,000 to 750,000 new daily infections) the next few weeks as COVlD circulates through schools/families.
🧵3/ Fig 1: Graph of 12 waves Fig 2: "Barometer" showing above average transmission Fig 3: Year-over-year graph, which informs the analytic forecast Fig 4: Forecast described in post
Read 4 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jan 17
Based on today's CDC & Biobot data, we estimate the following for the week of Jan 19:

🔸1 in 52 people in the U.S. actively infectious
🔸25% chance of exposure in a room of 15 ppl
🔸Nearly 1 million new daily infections
🔸5 cumulative infections per person all-time (avg)
🧵1/5 Heat map from CDC data with PMC estimates. Description of "Very High" states in next post
Transmission estimates have been marginally corrected upward.

11 states have Very High COVlD levels:

🔸PA: 1 in 25 estimated actively infectious
🔸MI: 1 in 23
🔸OH & KY: 1 in 22
🔸SD: 1 in 20
🔸NE & IA: 1 in 18
🔸IL & ME: 1 in 17
🔸IN: 1 in 16
🔸WV: 1 in 11
🧵2/5 Proportion Actively Infectious 1 in 52 (1.9%) New Daily Infections 941,000 Infections the Past Week 6,020,000 Infections in 2026 18,000,000 Cumulative Infections per Person 5.01 Long COVID Long COVID Cases Resulting 47,000 to 188,000 from New Daily Infections Long COVID Cases Resulting 301,000 to 1,200,000 from New Weekly Infections Excess Deaths Excess Deaths Resulting 270 to 450 from New Daily Infections Excess Deaths Resulting ...
We're in the middle of a 12th COVlD wave.

The peak has likely passed, but with students headed back to school, transmission is expected to remain high for at least the next several weeks.

🧵3/5 1) Graph of 12 waves 2) Barometer showing above-average transmission 3) Year over year graph 4) Forecast for transmission to decline and then percolate at high levels
Read 5 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jan 10
The size of the winter COVlD wave has been revised upward as post-holiday data come in.

We estimated 1 in 55 people in the U.S. are actively infectious.

🔥WV: 1 in 14
🔥IN: 1 in 15
🔥MI & OH: 1 in 21
🔥MO: 1 in 22
🔥CT: 1 in 24
🔥KS: 1 in 25
🔥MA & IL: 1 in 27

Quick 🧵 1/4 Heat map and PMC estimates, 1 in 55 infectious and 892,000 new daily infections for Jan 12. We expedited the report to release it two days early.
Nationally, we are seeing an estimated 892,000 new daily SARS-CoV-2 infections, meaning a 1 in 4 chance of exposure in a room of 15 people. Risk varies considerably by state.

We are approaching an average of 5 infections per person since pandemic onset.
🧵 2/4 Alabama Moderate Alaska Very Low Arizona Very Low Arkansas High* California Very Low Colorado Low Connecticut Very High Delaware Moderate District of Columbia Very Low Florida Very Low Georgia Very Low Guam Very Low Hawaii Very Low Idaho Very Low Illinois Very High Indiana Very High Iowa High Kansas Very High Kentucky Moderate Louisiana Moderate Maine High Maryland High Massachusetts Very High Michigan Very High* Minnesota Moderate Mississippi Low* Missouri Very High* Montana High Nebraska High Nevada Very Low New Hampshire Moderate New Jersey Low New Mexico Moderate New York High* North Ca...
We are in the 12th COVlD wave of the U.S.

Current transmission is higher than 68% of all days since the pandemic onset in 2020.
🧵 3/4 12 waves of COVlD Pandemic barometer: Higher than 88% of the past 100 days, 73% of the past year, 68% of the entire pandemic. Year over year graph Forecast of slowly declining transmission.
Read 4 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jan 8
You might not have heard, but the northeastern U.S. is in a COVlD surge.

We use wastewater levels to derive estimates of the proportion of people actively infectious in each state (prevalence), e.g., 1 in 24 people in Connecticut.

Let me walk you through it...

🧵1/8 Colors show CDC levels PMC prevalence estimates noted: -Maine 1 in 38 actively infectious with COVlD -New Hampshire 1 in 35 (limited data) -Vermont 1 in 75 -New York 1 in 44 (limited data) -Pennsylvania 1 in 44 -Massachusetts 1 in 36 -Connecticut 1 in 24 -Rhode Island 1 in 41 -New Jersey 1 in 82
Notice that #Connecticut has excellent SARS-CoV-2 wastewater surveillance. It's "Very High" across much of the state, per CDC.

Based on wastewater levels, we estimate 1 in 24 residents are actively infectious w/COVlD. That's a 66% exposure risk in a room of 25 people.

🧵2/8 Colors show CDC levels PMC estimate of prevalence
The CDC reports "Very High" levels in #Massachusetts.

The surveillance is less robust, but we estimate 1 in 26 residents are actively infectious, similar to our estimate in CT where coverage is better.

In a room of 25 people, that's a 62% chance of an exposure.

🧵3/8 Colors show CDC levels PMC prevalence estimates provided
Read 8 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jan 8
We're in the middle of a 12th COVlD wave in the U.S., with transmission particularly high in the Midwest and Northeast.

The CDC announced this week that COVlD continues to kill more Americans than breast and prostate cancer combined.

Get boosted & #MaskUp 💉💪😷
1/4🧵 Heat map of CDC data with PMC prevalence estimate
Levels are "Moderate" to "Very High" in 26 states.

However, data reporting is slow, and about 1/3 of states have low-quality data this week due to the holidays and illness.

2/4🧵 National estimates: Number of People Chances Anyone is Infectious 1 1.5% 2 3.0% 3 4.5% 4 6.0% 5 7.4% 10 14.3% 15 20.7% 20 26.5% 25 32.0% 30 37.0% 50 53.8% 75 68.6% 100 78.6% 200 95.4% 300 99.0%
Barometer: Higher transmission than 90 of the past 100 days (perhaps higher still, due to low data reporting quality)
State CDC Level Actively Infectious Alabama Moderate 1 in 48 (2.1%) Alaska Very Low 1 in 152 (0.7%) Arizona Very Low 1 in 201 (0.5%) Arkansas High* 1 in 36 (2.8%) California Very Low 1 in 484 (0.2%) Colorado Moderate 1 in 49 (2.0%) Connecticut Very High 1 in 24 (4.2%) Delaware Low* 1 in 70 (1.4%) District of Columbia Very Low 1 in 5,835 (0.0%) Florida Very Low 1 in 284 (0.4%) Georgia Low 1 in 90 (1.1%) Guam Very Low 1 in 687 (0.1%) Hawaii Very Low 1 in 874 (0.1%) Idaho Very Low 1 in 169 (0.6%) Illinois Moderate* 1 in 56 (1.8%) Indiana High* 1 in 34 (2.9%) Iowa Moderate 1 in 41 (2.4%) Kansas...
State CDC Level Actively Infectious Missouri Moderate* 1 in 42 (2.4%) Montana High 1 in 34 (2.9%) Nebraska Very High 1 in 26 (3.9%) Nevada Very Low 1 in 138 (0.7%) New Hampshire High* 1 in 35 (2.9%) New Jersey Low 1 in 82 (1.2%) New Mexico Low 1 in 87 (1.2%) New York Moderate* 1 in 44 (2.3%) North Carolina Low 1 in 82 (1.2%) North Dakota High* 1 in 34 (3.0%) Ohio Very High 1 in 27 (3.7%) Oklahoma Moderate* 1 in 62 (1.6%) Oregon Very Low 1 in 170 (0.6%) Pennsylvania Moderate 1 in 44 (2.3%) Rhode Island Moderate 1 in 41 (2.4%) South Carolina Moderate 1 in 54 (1.9%) South Dakota Very High 1 in...
If like years 1-4 of the pandemic, the winter wave has peaked. If like last year, we could hover near peak levels for a month.

Forecasting quality is low with 1/3 of states having data issues. Hopefully, we'll know a lot more in a few days.

3/4🧵 12 waves
Proportion Actively Infectious 1 in 65 (1.5%) New Daily Infections 749,000 Infections the Past Week 5,390,000 Infections in 2026 3,000,000 Cumulative Infections per Person 4.88 Long COVID Long COVID Cases Resulting 37,000 to 150,000 from New Daily Infections Long COVID Cases Resulting 270,000 to 1,080,000 from New Weekly Infections Excess Deaths Excess Deaths Resulting 220 to 370 from New Daily Infections Excess Deaths Resulting ...
year over year graph
forecast
Read 4 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jan 5
We told you that 109,000-175,000 Americans would died of COVID (excess deaths) in 2025.

Today, the CDC estimates 101,000 deaths/year (flat from Oct 2022 to Sep 2024), and likely higher when considering more nebulous non-acute excess deaths (heart attack 6 months later).
1/5
The CDC estimates are actually higher than I would have guessed, given their methodology, which models estimates based on easily countable factors in healthcare and expert input on multiplier values. It lends credence to the PMC upper bound of excess deaths of 175,000/yr.
2/5
What's troubling is the CDC has annual mortality flat. My expectation based on mortality displacement and Swiss Re data is that it should be declining. If is stays flat, we're running on something like breast+prostate cancer or lung cancer deaths per year in perpetuity.
3/5
Read 6 tweets

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