America Unprepared for Zoonotic Disease Threats

Increasing Scale of Animal Use in the U.S. Makes It Vulnerable to Zoonotic Outbreaks

Author: New York University
Published: 2023/07/06
Publication Type: Reports and Proceedings
Contents: Summary - Main - Related Publications

Synopsis: Animal industries in the U.S. pose serious risk of future pandemics and the government lacks a comprehensive strategy to address these threats. The U.S. is one of the world's largest producers of pigs and poultry, two important carriers of influenza viruses - viruses that scientists believe are most likely to produce a large-scale human pandemic. Live animal markets in the U.S. (elsewhere called "wet markets"), where animals are stored alive and slaughtered onsite for customers, also pose serious disease risks. New York City alone is home to at least 84 live animal markets.

Zoonosis (Zoonotic Disease)

A zoonosis (zoonoses or zoonotic disease) is an infectious disease that has jumped from a non-human animal to humans. Zoonotic pathogens may be bacterial, viral, or parasitic or involve unconventional agents and can spread to humans through direct contact or food, water, or the environment. Scientists estimate that more than 6 out of every ten known infectious diseases can be spread from animals, and 3 out of every four new or emerging infectious diseases in people come from animals. Typically, the first infected human transmits the infectious agent to at least one other human, infecting others. There are over 200 known types of zoonoses.

Main Digest

Animal industries in the United States pose serious risk of future pandemics and the U.S. government lacks a comprehensive strategy to address these threats, concludes a new study by Harvard Law School and New York University. The analysis calls for tightening existing regulations and implementing new ones in order to prevent zoonotic-driven outbreaks.

The report is the first to comprehensively map networks of animal commerce that fuel zoonotic disease risk in the U.S. It analyzes 36 different animal industries, including fur-farming, the exotic pet trade, hunting and trapping, industrial animal agriculture, backyard chicken production, roadside zoos, and more, to assess the risks each poses of generating a large-scale disease outbreak.

The report states, far from being a problem that only exists elsewhere, many high-risk interactions between humans and animals that happen routinely and customarily inside the U.S. could spark future pandemics. All of the animal industries the report examines are far less regulated than they should be and far less than the public believes they currently are. Today, wide regulatory gaps exist through which pathogens can spillover and spread, leaving the public constantly vulnerable to zoonotic disease.

"Covid has infected more than 100 million Americans and killed over a million of them. But the next pandemic may be far worse and might happen sooner than we think. The stakes are simply too high for the problem to be ignored," said Ann Linder, one of the report's lead authors and a research fellow with the Brooks McCormick Jr. Animal Law & Policy Program at Harvard Law School.

The immense and increasing scale of animal use in the United States makes the country uniquely vulnerable to zoonotic outbreaks. For example, the U.S. is the largest importer of live wildlife in the world, importing more than 220 million wild animals a year, many without any health checks or disease testing.

The U.S. also produces more livestock than almost any other nation. In 2022, the U.S. processed more than 10 billion livestock, the largest number ever recorded. Yet, the USDA does not regulate on-farm production of livestock. At slaughterhouses inspections are cursory, with each inspector tasked with examining more than 600 animals per hour for signs of disease.

The U.S. is one of the world's largest producers of pigs and poultry, two important carriers of influenza viruses - viruses that scientists believe are most likely to produce a large-scale human pandemic.

In addition, the people most vulnerable to zoonotic disease in the U.S. are those who work hands-on with farmed animals. Such jobs tend to be disproportionately staffed by people of color and those in rural communities who may be the least likely and the least able to report disease or seek medical care.

Live animal markets in the U.S. (elsewhere called "wet markets"), where animals are stored alive and slaughtered onsite for customers, also pose serious disease risks. New York City alone is home to at least 84 live animal markets.

Wildlife also poses significant risk. Hundreds of millions of live wild animals are imported into the U.S. each year, many without ever being looked at by anyone. Only scant and incomplete information exists about these animals, where they are originating, and where they go after they arrive. For example:

Even lesser-known animal industries in the U.S. pose serious risks to human health. Crocodile farms have facilitated the spread of West Nile Virus to humans and mink in fur farms have transmitted COVID-19 to humans.

Still, many industries that generate risk are loosely regulated or not regulated at all. Policy change is often reactive, the report explains, happening only after outbreaks occur. Rarely, it says, do agencies take proactive steps to address zoonotic risk, even when they are aware of the danger to the public. For many industries, the government lacks even basic data and has no system to screen animals for disease or to identify zoonotic threats proactively. In some industries, government action actually drives zoonotic risk and increases human exposure to pathogens.

"While zoonotic risks cannot be eliminated, they can be managed and reduced in ways that make all of us safer. But we need to look them in the eye. The risks that these markets present have been ignored or downplayed for far too long," said Dale Jamieson, Director of NYU's Center for Environmental and Animal Protection.

About the Report

This U.S. report is being released ahead of a larger global policy report overseen by the same researchers from Harvard Law School's Brooks McCormick Jr. Animal Law & Policy Program and New York University's Center for Environmental and Animal Protection.

The full report, which will be released later this year, examines global policy responses to live animal markets in 15 countries and the role these markets play in zoonotic disease transmission. The project aims to provide a comprehensive assessment that will assist global policymakers and increase public awareness of the dangers posed by zoonotic diseases.

Attribution/Source(s):

This quality-reviewed publication pertaining to our Medical Research News section was selected for circulation by the editors of Disabled World due to its likely interest to our disability community readers. Though the content may have been edited for style, clarity, or length, the article "America Unprepared for Zoonotic Disease Threats" was originally written by New York University, and submitted for publishing on 2023/07/06. Should you require further information or clarification, New York University can be contacted at the nyu.edu website. Disabled World makes no warranties or representations in connection therewith.

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