Taking Action for Cleaner Indoor Air: My Published Letter on Air Filtration in NYPL Branches

January 13, 2023
New York City Air Quality Built Environment Influenza Communicable Diseases

I am proud to announce that my letter addressing the important issue of indoor air quality in New York Public Library branches was published on 1/13/2023 in The Riverdale Press. In this letter, I highlight the dangers of poor indoor air quality, particularly during the ongoing COVID-19 pandemic, and call for the city to install air filtration units in library branches to protect the health and safety of patrons and staff. I also suggest piloting different types of air filters in select branches to determine the most effective and cost-efficient option for the library system.

I believe that clean indoor air in public spaces is crucial for public health and accessibility. I encourage visitors of this site to read my letter on The Riverdale Press website, and join me in advocating for safer and healthier indoor environments in our communities. The full letter is available here: https://www.riverdalepress.com/stories/air-in-library-needs-to-improve,92993?

Daily Shelter Census — New York City (DHS Daily Report)

February 2, 2026
homelessness New York City shelter census time series public health DHS

A concise analysis of daily counts of people and families in New York City's Department of Homeless Services (DHS) shelter system. This page summarizes trends, weekly patterns, and recent changes using daily shelter census data and highlights implications for public health practice.

Read more →

New York City 311 Service Request Data Dashboard

February 2, 2026
New York City Social Determinants Housing GIS Dashboard

Explore the New York City 311 Service Request Data Dashboard, an interactive GIS tool that visualizes social determinants of health using 311 service requests across NYC. Developed by Isaac H. Michaels, DrPH, the dashboard provides spatial analysis of complaint types, dynamic frequency updates, and …

Read more →

United States COVID-19 Data Tracking Report

February 2, 2026
United States COVID-19 Communicable Diseases Epidemiology GIS

Published: March 25, 2020 Updated: February 02, 2026 at 06:37PM Welcome Welcome to this web page, which presents analyses of data on COVID-19 in the United States. I believe that data are an essential component of any public health response. The data on this page are obtained from the data.cdc.gov o…

Read more →