COVID19
No, That New Study Doesn’t Show that Masks Are Useless
We asked Prof. Jason Abaluck, who co-authored a landmark randomized trial of mask promotion in Bangladesh, what conclusions we can draw from the recent Cochrane Review—and what the evidence says about the effectiveness of masks.

What Does Wastewater Reveal about COVID-19?
In the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz are joined by Yale operations expert Edward Kaplan, who uses mathematical models to understand a variety of processes. They discuss Kaplan’s ongoing research tracking COVID-19 infections through sewage, which bypasses the biases inherent in data from testing and even hospitalization.
Lessons Learned about Vaccine Hesitancy
On the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz are joined by Dr. Saad Omer, director of the Yale Institute for Global Health. They discuss mistakes made in the rollout of COVID-19 vaccines and how to avoid a crisis in childhood immunizations.
Navigating a New Now: Investing in ‘Tough Tech’
A venture fund led by Katie Rae ’97 was providing the patient capital required for breakthroughs on major societal problems like climate change and community health. Then COVID-19 complicated their day-to-day work—and gave their efforts greater urgency.
Is Long COVID One Disease or Many?
On the Health & Veritas podcast, Yale physician-professors Howard Forman and Harlan Krumholz talk with Dr. Akiko Iwasaki about her research trying to understand the cause or causes of long COVID, which has more than 200 reported symptoms.
Genomic Surveillance
On the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz are joined by Yale epidemiologist Nathan Grubaugh. They discuss the utility of rapid antigen tests and Grubaugh’s work tracking the evolution of COVID-19 variants.
From COVID or with COVID?
On the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz talk about the patients who test positive for COVID-19 after being admitted to the hospital for something else, and other health issues in the news, including the explosion in healthcare spending last year, a controversial Alzheimer’s drug, and the consequences of underinsurance in the United States.
The Latest on Omicron
On the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz discuss the state of the omicron surge and what we know and don’t know about the variant. Then they’re joined by Yale scientist Anne Wyllie, whose new research casts doubt on the ability of rapid antigen tests to detect asymptomatic omicron infections.
A Wider View of COVID-19
On the latest episode of the Health & Veritas podcast, Howard Forman and Harlan Krumholz are joined by Dr. Albert Ko, a Yale epidemiologist who has advised Connecticut governor Ned Lamont. They discuss the state of the pandemic, rebuilding global public health infrastructure, and what omicron tells us about future variants.
A Look Back at 2021 through Our Top Stories
This year, many of our most-read stories examined facets of the continuing COVID-19 pandemic, including the challenges of vaccination, the return to in-person work, the effectiveness of masks, and the bottleneck in the supply chain.
Navigating a New Now: Time to Prioritize Company Culture
Laszlo Bock ’99, founder and CEO of Humu, highlights the importance of company culture for keeping workers motivated and delivering results despite the challenges of the moment.