The mission of the Pandemic Mitigation Collaborative is to reduce the physical and emotional burden of the COVID-19 pandemic.


As New Orleans was one of the hardest-hit cities at the pandemic onset, Dr. Hoerger's Tulane University team sprang into action to reduce the burden of the pandemic in March of 2020. The Pandemic Mitigation Collaborative was born. We are a collaborative organization grounded in trust. We have led projects to reduce COVID transmission, identify and protect the most vulnerable, and understand the physical and mental toll of COVID-19. Along the way, we have become international experts in comprehensive COVID-19 mitigation, community partnership, and mutual support. Please contact us if we can be of help.

As summarized in a leading scientific publication, called Science, SARS-CoV-2 is an airborne respiratory virus. Contrary to early pandemic awareness, the virus spreads predominently through the air, rather than via surfaces. The virus can linger in the air like smoke in poorly ventilated indoor spaces. The virus spreads when one person exhales it and another person inhales it. See video.

A multi-layered approach remains necessary to reduce the burden of COVID-19. The PMC-19 logo shows our version of the "swiss cheese" model. Each layer of mitigation is important but less than 100% effective. By using multiple layers, we can reduce the number of reinfections and their impact on individuals, families, and society. See video.

When testing was publicly funded and widely available, we had reasonable data for accurately monitoring transmission. As testing has fallen off, we have developed wastewater-derived metrics for estimated cases, the proportion of the population infectious, new Long COVID cases, and more.

Transmission remains high, and will likely get worse in late 2023. Thus, accurate monitoring, testing, isolation, remote activities, masking, air cleaning, boosters, and other mitigation remain important. Droplet-based precautions (handwashing, hand sanitizer, surface cleaning) are ineffective against airborne illness. Accordingly, a prudent public health response would be to improve testing, masking, and air cleaning.


Oncology guidelines and pilot study to provide comprehensive pandemic support for people with cancer

JAMA Oncology Editorial

JAMA Oncology Rejoinder

Study Announcement

Creating safer classrooms using comprehensive COVID mitigation

Safe University Pre-Print

Our Video on Air Cleaning with School Example

Comprehensive Video on School Pandemic Safety

Helping communities to wear high-quality, well-fitting masks

N95 Distribution Study

Thread on DIY Fit-testing

Video with Masking Tips

Understanding the impact of the pandemic on high-exposure food service workers

Food Service Worker Pre-Print

Keeping babies safer from COVID-19 (more family studies to come)

HEPA / PAPR Buggy Pre-Print

Thread on Protecting Newborns from Nosocomial COVID-19

Documenting the psychological impact of the pandemic (more studies forthcoming)

Google Trends in Immediate Pandemic Impact

Regional Differences in Shelter-in-Place

Modifying CDC policies to improve protections for people with a history of smoking

Increased Risk Among Tobacco Users

Conducting research studies with comprehensive pandemic precautions

ACS Study with Comprehensive COVID
Precautions (picture pre-pandemic)


Our projects to mitigate the COVID-19 pandemic require that we read the newest scientific articles and pre-prints and consult with other leading experts on a daily basis. We are happy to lend our support if helpful for a new or ongoing pandemic project. We have also helped hundreds of specific individuals and organizations responding to pandemic crises. If you are facing a crisis, we are happy to provide informational resources and assistance within our competency or refer you to other experts who can be of more help. Please feel free to reach out by email ( or DM.