Tracking Emerging Public Health Challenges – November 15, 2025 – COVID
“A person came down with an atypical form of pneumonia in November 2002, but it would be two months before anyone realized it was the start of a pandemic.
In January 2003, epidemiologists in China identified two cases of “atypical pneumonia” in patients who had visited health care workers in Guangdong province. Teams initiated contact tracing and eventually discovered that the germ responsible for the illnesses had been circulating since a patient fell ill Nov. 16, 2002.
Those early cases in November were in “food handlers” — those who either worked as chefs in restaurants or as vendors at “wet markets,” where live animals, such as poultry and more-exotic animals like civet cats and raccoon dogs, were held in crowded conditions.
By the time Chinese disease investigators realized an outbreak might be unfolding, the disease had already been circulating for two months and had spread to health care workers.” (1)
“Sunday marks five years since Moderna’s COVID-19 vaccine was found to be 95.4% effective in its clinical trial.
The company announced on Nov. 16, 2020, a major breakthrough in the effort to combat the coronavirus pandemic. Data from Moderna was based on the first 95 confirmed COVID-19 cases in the trial’s 30,000 volunteers. It looked at participants who received a placebo and those who actually got the vaccine.
The pandemic was first declared on March 11, 2020, after more than 118,000 cases in 114 countries were detected. The declaration was made by the World Health Organization, also known as WHO.”
“In July 2021, vaccination mandates were largely enforced by employers. Then, in September of 2021, President Joe Biden announced that the federal government would take steps to mandate the COVID-19 vaccine.
However, all federal mandates were lifted when the national emergency was declared to have ended in May of 2023.” (2)
Weight-Loss Drug Zepbound Is Being Tested as a Treatment for Long Covid, by Emily Mullin, https://www.wired.com/story/weight-loss-drug-zepbound-is-being-tested-as-a-treatment-for-long-covid/
1.Science history: ‘Patient zero’ catches SARS, the older cousin of COVID — Nov. 16, 2002, By Tia Ghose, https://www.livescience.com/health/viruses-infections-disease/science-history-patient-zero-catches-sars-the-older-cousin-of-covid
2. This Day in History: Nov. 16, 2020: COVID vaccine found to be 95% effective in trial, https://www.live5news.com/2025/11/16/this-day-history-nov-16-2020-covid-vaccine-found-be-95-effective-trial/
curated by Jonathan M. Metsch, Dr.P.H.
Clinical Professor of Environmental Medicine, Icahn School of Medicine at Mount Sinai