The analysis revealed that fresh bird droppings contained five of the six Candida spp. yeast species that the World Health Organization listed as potentially dangerous in 2022, as well as two other species not yet listed but which have become a frequent source of yeast infections in humans globally. This indicates a risk of infection for children and immunocompromised individuals who come into contact with or are otherwise exposed to this droppings.
Researchers studied droppings from nearly 200 birds, including pigeons, European starlings, whiteflies, and sparrows, isolating 638 strains belonging to nine types of yeast. Pigeon droppings proved to be the most dangerous, containing the "greatest diversity of potentially pathogenic yeasts." Dangerous microorganisms were still present in the dried droppings, albeit in smaller quantities.
Scientists have warned that pathogens can be transmitted via the soles of shoes to homes, kindergartens, and hospitals. They emphasized the importance of maintaining hygiene and controlling the number of birds that accompany humans, especially in sensitive areas such as stadiums, hospitals, and recreational areas, to reduce the risk of infection and ensure public safety.
Experts advised citizens to avoid touching bird droppings and to keep their hands clean after visiting places where birds are present.
The results of the study were published in the journal Birds.
