Background

This report provides a brief summary of the weekly ensemble forecast from the COVID-19 Forecast Hub based on forecasts submitted on September 05, 2022. In collaboration with the US CDC, our team aggregates COVID-19 forecasts from dozens of teams around the globe. Typically on Wednesday of each week, a summary of the week's forecasts from the COVID-19 Forecast Hub appear on the official CDC COVID-19 forecasting page.

Every week, teams submit their forecasts to the COVID-19 Forecast Hub. This past week, 30 models were submitted.

Each Monday evening or Tuesday morning, we combine the most recent forecasts from each team into a single "ensemble" forecast of reported COVID-19 cases at the county, state, and national level and deaths at the state and national level. At the moment, we only generate ensemble forecasts for up to four weeks into the future, as the available evidence suggests that models are less accurate at longer forecast horizons.

An archive of weekly reports from the COVID-19 Forecast Hub can be found at this page.

COVID-19 Forecasts

National level

This week, our ensemble combined forecasts from 25 different models.

At the national level, the ensemble model predicts that weekly totals of observed deaths in each of the next four weeks will be between 2,800 and 3,200 deaths with around 1,059,600 deaths by October 01, 2022 (95% prediction interval: 1,057,424 - 1,064,197).

For the week ending October 01, 2022, the ensemble forecasts that reported COVID-19 deaths in the US will be between 1,700 and 4,400 (95% prediction interval: 1,664 - 4,374).

As of September 28, 2021 the ensemble forecast only reports one-week ahead forecasts for cases and 14 day ahead forecasts for hospitalizations, due to persistent large inaccuracies observed when forecasting beyond that.

For September 19, 2022 COVID-19 daily hospitalizations in the US will be between 2,200 and 9,500 (95% prediction interval: 2,203 - 9,474).

For the week ending September 10, 2022, the ensemble forecasts that reported COVID-19 cases in the US will be between 339,400 and 711,500 (95% prediction interval: 339,445 - 711,459).

You can explore the full set of models, including their forecasts for past weeks online at the Forecast Hub interactive visualization.

Deaths

Hospitalizations

Cases

State level

The ensemble model estimates that 14 out of 50 states and 3 out of 7 territories of the US have a greater than 50% chance of having more deaths in the next two weeks compared to the past two weeks.The model forecasts that 4 states and territories have a greater than 75% chance of an increase over the next two weeks (Mississippi, Nebraska, Ohio, Virgin Islands).

The sortable and searchable table below shows the total number of reported COVID-19 deaths at the US level and by state over the last two weeks (ending Saturday, September 03, 2022) and the forecasted counts for the subsequent two weeks (ending September 17, 2022).

Looking at the rates allows for easier comparison across states, where you can see which states have had or are predicted to have proportionally higher rates in comparison to other states.

When interpreting probability of an increase, it's important to note that the increase or decrease is relative to the location-specific recent observed incidence, which varies across locations.

Death rates

The sortable and searchable death table below shows the total number of reported COVID-19 deaths at the US level and by state as of Saturday, September 03, 2022 ("Total COVID-19 Deaths") as well as the rate of reported COVID-19 deaths in the population (standardized per 100,000 population) over the last two weeks and over the next two weeks.

Hospitalization rates

The sortable and searchable hospitalization table below shows the 7 day average hospitalization count and rate of reported COVID-19 hospitalization in the population (standardized per 100,000 population) over the last week (August 28, 2022 to September 03, 2022) and two weeks ahead (September 11, 2022 to September 17, 2022).

Case rates

The sortable and searchable case table below shows the weekly case count and rate of reported COVID-19 case in the population (standardized per 100,000 population) over the last week (August 28, 2022 to September 03, 2022) and one week ahead (September 04, 2022 to September 10, 2022).

Methods & Acknowledgement

This report was reproducibly and dynamically generated using RMarkdown. The code for the report can be found here.