scholarly journals Northward Expansion of Amblyomma americanum (Acari: Ixodidae) into Southern Michigan

2022 ◽  
Author(s):  
Peter D Fowler ◽  
Sarah Nguyentran ◽  
Lauren Marie Quantroche ◽  
Meghan Porter ◽  
Vishvapali Kobbekaduwa ◽  
...  
Keyword(s):  
Active Surveillance ◽  
Domestic Animal ◽  
Amblyomma Americanum ◽  
Life Stages ◽  
The Public ◽  
Animal Pathogens ◽  
Public Health Officials ◽  
Animal Sentinel ◽  
Northward Expansion ◽  
Established Population

Amblyomma americanum (Linnaeus) (Acari: Ixodidae) (lone star tick) is an aggressive, generalist parasite that vectors numerous important human and animal pathogens. In recent decades its geographic range has been expanding northwards from endemic regions in the southeastern and southcentral US. In 2019 five questing A. americanum comprising two life stages were detected at one site in Berrien County, in southwestern Michigan, satisfying one CDC criterium for an established population for the first time in the state. To better characterize the northern extent of emerging A. americanum, we conducted active surveillance (i.e., drag sampling) in summer 2020 throughout Michigans southern counties and detected one adult A. americanum from each of six widespread sites, including where they had been detected in 2019. A larger established population was identified at another site in Berrien County, which yielded 691 A. americanum comprising three life stages. Questing tick phenologies at this site were similar to that reported for other regions. Statewide surveillance in 2021 revealed no A. americanum outside of Berrien County, but establishment criteria were met again at the two sites where established populations were first detected respectively in 2019 and 2020. These observations may represent the initial successful invasion of A. americanum into Michigan. Data from passive (1999-2020) and active surveillance (2004-2021) efforts, including a domestic animal sentinel program (2015-2018), are reported to provide context for this nascent invasion. Continued active surveillance is needed to help inform the public, medical professionals, and public health officials of the health risks associated with this vector.

scholarly journals From Isolation to Containment: Perceived Fear of Infectivity and Protective Behavioral Changes during the COVID-19 Vaccination Campaign

2021 ◽  
Vol 18 (12) ◽  
pp. 6503
Author(s):  
Arielle Kaim ◽  
Maya Siman-Tov ◽  
Eli Jaffe ◽  
Bruria Adini
Keyword(s):  
Vaccination Campaign ◽  
Cross Sectional Study ◽  
Protective Behavior ◽  
Cross Sectional ◽  
Social Distancing ◽  
The Public ◽  
The Road ◽  
Israeli Population ◽  
Study Results ◽  
Public Health Officials

In the ongoing COVID-19 pandemic, maintenance of protective behavior is a continued challenge in the effort to contain the spread of the virus. A cross-sectional study via an internet questionnaire was utilized to elucidate changes in compliance to protective behavior among the Israeli population (n = 1120), after the beginning of the vaccination campaign. Comparison was made between individuals who were previously infected with the virus, those who received one dose of inoculation with the vaccine, and individuals that were neither infected or vaccinated. The study results indicate that those who were previously infected with the COVID-19 virus were less careful about mask wearing (18.8%) and social distancing (29.7%), as compared to the other examined groups (regarding mask wearing, 8.2% and 11.6% respectively, and with regard to social distancing 12.8% and 19.2%) and may require targeted risk communication campaigns to address this population. Furthermore, the study revealed that those that were non-Jewish (as compared to Jewish study counterparts) or that were older (19+) were more vigilant in their protective behavior (29.6% vs. 11.2% respectively for social distancing and 29.6% vs. 11.1% respectively for mask wearing). Despite a successful initial vaccination campaign in Israel, public health officials need to engage all members of the public to unremittingly observe compliance to directed health guidelines, to ensure that the results of previous governmental efforts in fighting the pandemic (such as lockdowns) will be effectively sustained, and the road to containment will be hastened.

scholarly journals The bacterial community of the lone star tick (Amblyomma americanum)

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
L. Paulina Maldonado-Ruiz ◽  
Saraswoti Neupane ◽  
Yoonseong Park ◽  
Ludek Zurek
Keyword(s):  
Bacterial Community ◽  
Amblyomma Americanum ◽  
Rrna Gene ◽  
Culturable Bacteria ◽  
Core Microbiome ◽  
Lone Star Tick ◽  
Animal Pathogens ◽  
Wide Range ◽  
Culture Independent ◽  
Culture Dependent

Abstract Background The lone star tick (Amblyomma americanum), an important vector of a wide range of human and animal pathogens, is very common throughout the East and Midwest of the USA. Ticks are known to carry non-pathogenic bacteria that may play a role in their vector competence for pathogens. Several previous studies using the high throughput sequencing (HTS) technologies reported the commensal bacteria in a tick midgut as abundant and diverse. In contrast, in our preliminary survey of the field collected adult lone star ticks, we found the number of culturable/viable bacteria very low. Methods We aimed to analyze the bacterial community of A. americanum by a parallel culture-dependent and a culture-independent approach applied to individual ticks. Results We analyzed 94 adult females collected in eastern Kansas and found that 60.8% of ticks had no culturable bacteria and the remaining ticks carried only 67.7 ± 42.8 colony-forming units (CFUs)/tick representing 26 genera. HTS of the 16S rRNA gene resulted in a total of 32 operational taxonomic units (OTUs) with the dominant endosymbiotic genera Coxiella and Rickettsia (> 95%). Remaining OTUs with very low abundance were typical soil bacterial taxa indicating their environmental origin. Conclusions No correlation was found between the CFU abundance and the relative abundance from the culture-independent approach. This suggests that many culturable taxa detected by HTS but not by culture-dependent method were not viable or were not in their culturable state. Overall, our HTS results show that the midgut bacterial community of A. americanum is very poor without a core microbiome and the majority of bacteria are endosymbiotic.

scholarly journals Metastriate Ixodid Life Stages Protected from Predatory Ants in Texas

2019 ◽  
Vol 48 (5) ◽  
pp. 1063-1070 ◽  
Author(s):  
Allan T Showler ◽  
Weste L A Osbrink ◽  
Bailee N Dorsey ◽  
Ryan M Caesar
Keyword(s):  
Solenopsis Invicta ◽  
Amblyomma Americanum ◽  
Fire Ant ◽  
Life Stages ◽  
Red Imported Fire Ant ◽  
Pogonomyrmex Barbatus ◽  
Solenopsis Invicta Buren ◽  
Hot Dog ◽  
Imported Fire Ant ◽  
Predatory Ants

Abstract Multiple predatory ant species, including the red imported fire ant, Solenopsis invicta (Buren) (Hymenoptera: Formicidae), have been reported to attack ixodids (Ixodida: Ixodidae), but evidence has largely been circumstantial. When living lone star tick, Amblyomma americanum (L.) (Acarina: Ixodidae), eggs, and unfed and blood-engorged larvae, nymphs, and adults were deployed on bait transects with hot dog slices and dead house flies, Musca domestica L., in West, Central, and South Texas. The various ixodid life stages were not attacked while ants were strongly recruited to the hot dog and M. domestica baits. Similarly, when the same ixodid life stages and other baits were placed adjacent to colonies of two ant species (red harvester ant, Pogonomyrmex barbatus (Smith) and the red imported fire ant, Solenopsis invicta Buren) the ixodids were not preyed upon while hot dog slices and dead M. domestica were immediately attacked. Some ant species dragged blood-engorged adult ixodids and eggs away from the colony entrance, where they were originally placed, and discarded them. Evidence and mechanisms for allomone-based ant deterrence in the genera Amblyomma, Dermacentor, and Rhipicephalus (metastriate ixodids) are discussed. Protection of ixodids from predatory ants helps to explain why metastriate ixodids remain problematic worldwide despite the presence of predaceous ants.

scholarly journals Municipal public health officials and the Public Health Act

2016 ◽  
Vol 1 ◽  
Author(s):  
Heidi Lyshol
Keyword(s):  
Public Health ◽  
Health Workers ◽  
Relevant Literature ◽  
Vocational Teachers ◽  
The Public ◽  
New Public Health ◽  
New Public ◽  
Public Health Officials ◽  
Public Health Workers ◽  
Public Health Act

Introduction: The Norwegian Public Health Act of 2012 was intended to give the municipalities a bigger stake in the health of the population by emphasizing public health at a municipal level. The aim of this study was to investigate the effects of the Act on public health officials in the execution of their vocational roles.Research questions: How do public health officials in Norwegian municipalities balance the requirements of the new Public Health Act and what their local leaders, both politicians and bureaucrats, want? How do they use the Act in the performance of their vocational roles? Does this have any relevance for vocational teachers? Method :After a literature search, semi-formal interviews were conducted with 13 municipal public health officials who were also given practical tasks and short questionnaires. The interview transcripts were analysed using Thematic Analysis. This qualitative research technique is defined and described. Discussion and Results: The study shows that the public health workers see the Act as a useful tool and actively use it to leverage the public health field into greater importance. They feel that the Act is empowering, gives them greater pride in their work, and that it helps both them and their superiors to achieve greater understanding of public health workers’ roles in their municipalities. Using the informants’ own words, changes in the municipal public health workers’ roles and vocational self-definitions are discussed in the context of the new Act and selections from the relevant literature. Conclusion: The Public Health Act has changed the roles of municipal public health workers and helped them to further public health by giving them more responsibility and expanded their duty to safeguard health in all policies. The Act is seen as empowering, giving public health professionals pride in their work and greater role understanding, and should be heavily featured in the curriculum of future public health workers.

Public health challenges during the COVID-19 outbreak in Nepal: a commentary

2020 ◽  
Vol 34 (4) ◽  
pp. 373-376 ◽  
Author(s):  
Sharmistha Sharma ◽  
Jeevan Bhatta
Keyword(s):  
Public Health ◽  
Design Methodology ◽  
Health Workers ◽  
Health Interventions ◽  
Content Type ◽  
The Public ◽  
Public Health Challenges ◽  
Current Scenario ◽  
Public Health Officials ◽  
The Government

PurposeThe purpose of this paper is to depict the current scenario of coronavirus diseases 2019 (COVID-19) in Nepal, how the government is tackling this pandemic as well as look at the public health challenges that Nepal is facing and might face in the future.Design/methodology/approachThis paper is a viewpoint of COVID-19 activities conducted in Nepal.FindingsNepal is vulnerable to COVID-19, as it shares borders with China and India. Cases have started to be seen in different parts of Nepal. Government of Nepal has started various measures to control the spread of the virus such as deploying health workers, information sharing via different mediums. However, there are still many challenges that the government and public health officials need to be concerned about as well.Originality/valueThis paper provides information about the situation of COVID-19 in Nepal, how the government is handling, and public health challenges that may arise. This paper can be beneficial for further public health interventions.

scholarly journals Mycobacteria in water, soil, plants and air: a review

2013 ◽  
Vol 57 (No. 12) ◽  
pp. 623-679 ◽  
Author(s):  
K. Hruska ◽  
M. Kaevska
Keyword(s):  
Soft Tissues ◽  
Harmful Effect ◽  
Short Review ◽  
Published Data ◽  
The Public ◽  
Inflammatory Pathways ◽  
Environmental Mycobacteria ◽  
Animal Pathogens ◽  
Small Chemical

Amazingly, despite the 24 143 papers on mycobacteria, indexed in the Web of Science database during the last six years, published by 67 008 authors from 13 128 organizations located in 166 countries or territories, internationally accepted legal directives on how to control the public health risk associated with environmental mycobacteria have yet to be developed. Mycobacteria are human and animal pathogens, causing not only tuberculosis and leprosy, but mycobacterioses of skin, soft tissues and lung. Due to their cell wall composition and their adaptability mycobacteria can survive in different habitats for years. Their immunomodulatory ability has been recognised for more than 50 years and hundreds of papers published during the last two decades have demonstrated that small chemical products derived from mycobacterial cells participate in inflammatory pathways involved the pathogenesis of important human diseases like Crohn’s disease, asthma, type 1 diabetes mellitus, psoriasis, arthrosis, Blau syndrom, sarcoidosis, autism etc. Mycobacteria can influence inflammatory pathways not only as live organisms, but also by means of components derived from dead cells. Pasteurisation or cooking does not affect this ability. Hence, how many mycobacterial cells are ingested, what factors play a role concurrently, and how long the harmful effect persists become important questions. This paper presents only a short review based on selected papers about mycobacteria in water, soil, plants and air with the aim of attracting attention to this significant global problem and of making the first steps towards protection of people. Selected bibliographic references of published data from 2007 to 2012 are presented in easy-to-navigate tables.

scholarly journals Identification of Novel Viruses in Amblyomma americanum , Dermacentor variabilis , and Ixodes scapularis Ticks

mSphere ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Rafal Tokarz ◽  
Stephen Sameroff ◽  
Teresa Tagliafierro ◽  
Komal Jain ◽  
Simon H. Williams ◽  
...  
Keyword(s):  
New York ◽  
High Throughput ◽  
High Throughput Sequencing ◽  
Ixodes Scapularis ◽  
The United States ◽  
Dermacentor Variabilis ◽  
Amblyomma Americanum ◽  
Animal Pathogens ◽  
Wide Range ◽  
Sequencing Platforms

ABSTRACT Ticks carry a wide range of known human and animal pathogens and are postulated to carry others with the potential to cause disease. Here we report a discovery effort wherein unbiased high-throughput sequencing was used to characterize the virome of 2,021 ticks, including Ixodes scapularis ( n = 1,138), Amblyomma americanum ( n = 720), and Dermacentor variabilis ( n = 163), collected in New York, Connecticut, and Virginia in 2015 and 2016. We identified 33 viruses, including 24 putative novel viral species. The most frequently detected viruses were phylogenetically related to members of the Bunyaviridae and Rhabdoviridae families, as well as the recently proposed Chuviridae . Our work expands our understanding of tick viromes and underscores the high viral diversity that is present in ticks. IMPORTANCE The incidence of tick-borne disease is increasing, driven by rapid geographical expansion of ticks and the discovery of new tick-associated pathogens. The examination of the tick microbiome is essential in order to understand the relationship between microbes and their tick hosts and to facilitate the identification of new tick-borne pathogens. Genomic analyses using unbiased high-throughput sequencing platforms have proven valuable for investigations of tick bacterial diversity, but the examination of tick viromes has historically not been well explored. By performing a comprehensive virome analysis of the three primary tick species associated with human disease in the United States, we gained substantial insight into tick virome diversity and can begin to assess a potential role of these viruses in the tick life cycle.

scholarly journals Parturition in Mammals: Animal Models, Pain and Distress

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2960
Author(s):  
Julio Martínez-Burnes ◽  
Ramon Muns ◽  
Hugo Barrios-García ◽  
Dina Villanueva-García ◽  
Adriana Domínguez-Oliva ◽  
...  
Keyword(s):  
Animal Species ◽  
Current Knowledge ◽  
Labour Pain ◽  
Domestic Animals ◽  
Domestic Animal ◽  
Birth Process ◽  
Pain Mechanisms ◽  
The Public ◽  
Human Labour ◽  
Experience Pain

Parturition is a complex physiological process and involves many hormonal, morphological, physiological, and behavioural changes. Labour is a crucial moment for numerous species and is usually the most painful experience in females. Contrary to the extensive research in humans, there are limited pain studies associated with the birth process in domestic animals. Nonetheless, awareness of parturition has increased among the public, owners, and the scientific community during recent years. Dystocia is a significant factor that increases the level of parturition pain. It is considered less common in polytocous species because newborns’ number and small size might lead to the belief that the parturition process is less painful than in monotocous animal species and humans. This review aims to provide elements of the current knowledge about human labour pain (monotocous species), the relevant contribution of the rat model to human labour pain, and the current clinical and experimental knowledge of parturition pain mechanisms in domestic animals that support the fact that domestic polytocous species also experience pain. Moreover, both for women and domestic animal species, parturition’s pain represents a potential welfare concern, and information on pain indicators and the appropriate analgesic therapy are discussed.

scholarly journals Myths Surrounding Covid-19 Vaccine Candidates: A Guide to Fight Back

2021 ◽  
Author(s):  
John Zizzo
Keyword(s):  
Public Health ◽  
Herd Immunity ◽  
Vaccine Uptake ◽  
Protective Measure ◽  
Vaccine Hesitancy ◽  
Health Providers ◽  
Vaccine Candidates ◽  
The Public ◽  
News Organizations ◽  
Public Health Officials

The Covid-19 pandemic has propelled public health officials into the socio-political sphere due to the need for constantly updated information on behalf of the public. However, many individuals choose to acquire health information/guidance from indirect sources, including social media, news organizations, and general word of mouth. As a result, myths and false narratives about various essential health topics, including vaccine characteristics and protective measures, can circulate un-verified between millions of individuals with little recourse. These can further widen the “gap” between public knowledge and current research, resulting in lower vaccine uptake (vaccine hesitancy) and protective measure adherence. Such actions have profound implications as nations attempt to achieve herd immunity and end the pandemic once and for all. Thus, it is vital that public health officials, health providers, researchers, and the general public be able to differentiate common Covid-19 myths from facts and be prepared to approach such interactions via sound reasoning and research-based evidence. This chapter will serve as a guide to accomplish just that.

scholarly journals Alpha-Gal and Cross-Reactive Carbohydrate Determinants in the N-Glycans of Salivary Glands in the Lone Star Tick, Amblyomma americanum

Vaccines ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 18 ◽  
Author(s):  
Yoonseong Park ◽  
Donghun Kim ◽  
Gunavanthi Boorgula ◽  
Kristof De Schutter ◽  
Guy Smagghe ◽  
...  
Keyword(s):  
Salivary Glands ◽  
Molecular Mimicry ◽  
Amblyomma Americanum ◽  
Pathogen Transmission ◽  
Tick Saliva ◽  
Bioactive Materials ◽  
Male And Female ◽  
Lone Star Tick ◽  
Meat Allergy ◽  
Animal Pathogens

Ticks are important ectoparasites and vectors of numerous human and animal pathogens. Ticks secrete saliva that contains various bioactive materials to evade the host defense system, and often facilitates the pathogen transmission. In addition, the Lone star tick saliva is thought to be the sensitizer in red meat allergy that is characterized by an allergic reaction to glycan moieties carrying terminal galactose-alpha-1,3-galactose (aGal). To assess N-glycome of Amblyomma americanum, we examined the N-glycan structures in male and female salivary glands at three different feeding stages and in carcasses of partially fed lone star ticks. We also surveyed the genes involved in the N-glycosylation in the tick species. The aGal epitopes and cross-reactive carbohydrate determinants (CCD) increases over time after the onset of blood feeding in both male and female A. americanum. These CCDs include xylosylation of the core mannose, 1,3-mono and 1,3- and 1,6-difucosylations of the basal GlcNac and mono- or diantennary aGal. Combinations of both xylosylation and aGal and fucosylation and aGal were also found on the N-glycan structures. While the enzymes required for the early steps of the N-glycosylation pathway are quite conserved, the enzymes involved in the later stages of N-glycan maturation in the Golgi apparatus are highly diverged from those of insects. Most of all, we propose that the aGal serves as a molecular mimicry of bioactive proteins during tick feedings on mammalian hosts, while it contributes as a sensitizer of allergy in atypical host human.

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