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A study of red-necked vultures in India shows that nearly 40% of isolated gut bacteria are resistant to multiple antibiotics. This suggests vultures may play a role in spreading drug-resistant infections to humans and other animals.
A common India n bird found in a variety of habitats, including wetlands, agricultural areas, and waste dumpsites. The results showed that nearly 40% of the bacterial isolates examined in red-necked vulture s were resistant to three or more antibiotic classes, raising questions about the role of wildlife in the cycle of antimicrobial resistance spread between the environment and humans.
The red-necked vulture, also known as the Indian black vulture, is widespread across the Indian subcontinent. This bird lives in various environments, including agricultural fields, pastures, villages, and cities, as well as wetlands. It is also found in areas where waste accumulates. This ability to adapt to environments where human activity is prevalent makes the bird an important model for studying the relationship between wildlife, contaminated environments, and antibiotic resistance.
Researchers analyzed samples of red-necked vulture feces and successfully isolated a diverse range of bacteria, including strains that showed resistance to multiple types of antibiotics. The results sparked interest among researchers about the potential role of wild birds in carrying and spreading resistant bacteria across different environments, especially since birds can travel between multiple habitats during their search for food.
Scientists from Mohanlal Sukhadia University collected 45 fecal samples from red-necked vultures living in their natural habitat in Udaipur between July 2022 and June 2023. The analyses resulted in the isolation of 60 bacterial strains belonging to eight different genera. Escherichia coli (E. coli) was the most common bacterium in the analyzed samples, followed by Enterobacter and Klebsiella.
The study also identified four bacterial species that had not been previously recorded in this bird species, including Enterobacter mori and Enterobacter soli. These are reported for the first time globally in red-necked vultures. Some of these species are typically associated with soil and plants, suggesting that the birds may have been exposed to them while foraging in the soil, wetlands, or contaminated environments.
Wild birds can be exposed to antibiotic-resistant bacteria through various environmental sources, such as contaminated water, soil, food, and waste. Because birds move between different habitats, they can carry these bacteria with them from one environment to another, making them a point of interest for researchers studying the spread of antibiotic resistance in nature.
However, the mere presence of resistant bacteria in bird feces does not alone prove transmission from birds to humans. This hypothesis requires further studies to establish a direct transmission path. Antibiotic resistance occurs when bacteria change in a way that allows them to survive despite the use of drugs designed to kill them or limit their growth. This resistance can make treating some infections more difficult and possibly increase the risk of prolonged infections and health complications.
Therefore, discovering resistant bacteria in wildlife is of interest to researchers as part of the broader picture of antimicrobial resistance in the environment. The study's results do not indicate that merely observing or photographing red-necked vultures poses a direct health risk. The study detected the presence of resistant bacteria in fecal samples but did not prove a direct route for these bacteria to be transmitted from birds to humans.
Wildlife enthusiasts can take some simple health precautions when visiting areas where birds are present, such as washing their hands thoroughly after visiting natural habitats and using appropriate protective gear when handling dead or sick birds
Antimicrobial Resistance Wildlife Red-Necked Vulture India Escherichia Coli
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