One Health: Chlamydiae and Chlamydia-Likes in Humans, Animals and the Environment

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Public Health Microbiology".

Deadline for manuscript submissions: closed (15 March 2023) | Viewed by 1836

Special Issue Editors


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Guest Editor
Institute for Public Health Genomics (IPHG), Department of Genetics and Cell Biology, Research Institute GROW, Faculty of Health, Medicine & Life Sciences, University of Maastricht, 4-6, 6211 LK Maastricht, The Netherlands
Interests: epidemiology; diagnostics; immunogenetics; infectious diseases; valorization and translation; Chlamydia trachomatis
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Guest Editor
Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, Uttar Pradesh, India
Interests: biotechnology; public health genomics; bioproduct design
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

One health is the collaborative effort of multiple disciplines working locally, nationally and globally to attain optimal health for people, animals and the environment. There are many examples of transmission from microorganisms from the environment and animals to humans (zoonosis). One example is Female Reproductive Health (FRH) which is affected by Chlamydia trachomatis, a sexually transmitted infection and is influenced by the environmental Chlamydia-like Waddlia chondrophila which lives in amoebae. Infertility rates are amongst the highest in the world, especially in India. Animal experiments have demonstrated that female reproductive health is affected by the presence of multiple exposures of CT and Chlamydiae in general, though this has not yet been well studied. It is also known that chlamydiae in poultry (oa C. psittaciis) is very prevalent and can be transmitted to humans.

The current Special Issue has a focus on Chlamydiae in the environment and in animals alone or preferentially in relation to human infection and disease. Knowledge of epidemiology and association with bacterial infections can potentially inform appropriate action as these bacterial infections are treatable, so novel case reports are also included in this Special Issue. Finally, since large consortia and projects on Chlamydiae and Chlamydia-likes are funded by the European Union and other continents, we encourage researchers and clinicians to prepare original articles describing the results obtained through the activities of these consortia.

Prof. Dr. Servaas A. Morré
Prof. Dr. ir. Jonathan A. Lal
Guest Editors

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Research

10 pages, 313 KiB  
Communication
Occurrence of Chlamydia spp. in Conjunctival Samples of Stray Cats in Timișoara Municipality, Western Romania
by Andreea Tîrziu, Viorel Herman, Kálmán Imre, Diana Maria Degi, Marius Boldea, Vlad Florin, Timea Andrea Bochiș, Marcu Adela and János Degi
Microorganisms 2022, 10(11), 2187; https://0-doi-org.brum.beds.ac.uk/10.3390/microorganisms10112187 - 04 Nov 2022
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Abstract
Despite the widespread public health concern about stray cats serving as reservoirs for zoonotic agents, little is known about the effect of urban and peri-urban landscapes on exposure risk. We conducted this study to monitor the presence of Chlamydia spp. in stray cats, [...] Read more.
Despite the widespread public health concern about stray cats serving as reservoirs for zoonotic agents, little is known about the effect of urban and peri-urban landscapes on exposure risk. We conducted this study to monitor the presence of Chlamydia spp. in stray cats, with or without conjunctivitis, living in Timișoara Municipality, Western Romania, using staining and PCR methods. A total of 95 cats were enrolled, and conjunctival samples were harvested from 68 clinically healthy cats and another 27 cats presenting with clinical signs of conjunctivitis. Overall, we found that 65.3% (62/95) of the cats tested positive for Chlamydia spp. by PCR. Chlamydia spp. were detected in 45/95 conjunctival samples using a standard Giemsa stain, compared with 62/95 using PCR (Cohen’s kappa index = 0.308; p = 0.0640). Of the cats that tested positive by PCR, 72.6% (45/62) were asymptomatic, and another 27.4% (17/62) expressed clinical signs of conjunctivitis. We found no significant difference between (p > 0.05) the distribution of infection and the recorded epidemiological data (sex, breed, age, territorial distribution, or sampling season). However, the Chlamydia spp. detection frequency was significantly higher in asymptomatic than in symptomatic cats (p = 0.0383). The obtained results increase the level of concern and awareness about the possible zoonotic potential of this pathogen and highlight that urban stray cats can be essential sources of feline chlamydiosis. Full article
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