Simon Firestone

Dr. Simon Firestone

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Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 November 2011 in PLOS Neglected Tropical Diseases
Verified
Journal Article
Open access
PDF file
TETenzin
Tenzin
Navneet DhandNavneet Dhand
Navneet Dhand
TGTashi Gyeltshen
Tashi Gyeltshen
SFSimon Firestone
Simon Firestone
CZChhimi Zangmo
Chhimi Zangmo
MWMichael Ward
Michael Ward
Dog bites in humans are a public health problem worldwide. The issues of increasing stray dog populations, rabies outbreaks, and the risk of dogs biting humans have been frequently reported by the media in Bhutan. This study aimed to estimate the bite incidence and identify the risk factors for dog bites in humans, and to estimate human deaths from rabies in rabies endemic south Bhutan. A hospital-based questionnaire survey was conducted during 2009–2010 among dog bites victims who visited three hospitals in Bhutan for anti-rabies vaccine injection. Decision tree modeling was used to estimate human deaths from rabies following dog bite injuries in two rabies endemic areas of south Bhutan. Three hundred and twenty four dog bite victims were interviewed. The annual incidence of dog bites differed between the hospital catchment areas: 869.8 (95% CI: 722.8–1022.5), 293.8 (240–358.2) and 284.8 (251.2–323) per 100,000 people in Gelephu, Phuentsholing and Thimphu, respectively. Males (62%) were more at risk than females (P<0.001). Children aged 5–9 years were bitten more than other age groups. The majority of victims (71%) were bitten by stray dogs. No direct fatal injury was reported. In two hospital areas (Gelephu and Phuentsholing) in south Bhutan the annual incidence of death from rabies was 3.14 (95% CI: 1.57–6.29) per 100,000 population. The decision tree model predicted an equivalent annual incidence of 4.67 (95% CI: 2.53–7.53) deaths/100,000 population at risk. In the absence of post exposure prophylaxis, the model predicted 19.24 (95% CI: 13.69–25.14) deaths/year in these two areas. Increased educational awareness of people about the risk of dog bites and rabies is necessary, particularly for children in rabies endemic areas of Bhutan. Dog bites in humans are a public health problem worldwide. We conducted a hospital based questionnaire survey and described the incidence and risk factors for human dog bites in Bhutan. We also estimated the human death rate attributable to rabies in two rabies endemic areas of south Bhutan. Our study shows that dog bites incidents in humans are common in the survey areas. There were significant gender and age differences in bite incidents; males and the children are affected the most. The majority of the victims were bitten by stray dogs, increasing the risk of rabies infection if not treated in time. Our decision tree model predicted 2.23 (95% CI: 1.20–3.59) human deaths from rabies/year, equivalent to an annual incidence of 4.67 (95% CI: 2.53–7.53) deaths/100,000 in the two rabies endemic areas of south Bhutan. In the absence of post exposure prophylaxis, the model predicted 19.24 (95% CI: 13.69–25.14) deaths/year in these two areas. The public should be encouraged to visit hospitals for post exposure prophylaxis following dog bite injury in south Bhutan.

19 February 2014 in Parasites & Vectors
Verified
Journal Article
Open access
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PPPiyumali K Perera
Piyumali K Perera
RGRobin Gasser
Robin Gasser
SFSimon Firestone
Simon Firestone
GAGarry A Anderson
Garry A Anderson
JMJakob Malmo
Jakob Malmo
Abdul JabbarAbdul Jabbar
Abdul Jabbar
Oriental theileriosis is a tick-borne, protozoan disease of cattle caused by members of the Theileria orientalis-complex. Recent outbreaks of this disease in eastern Australia have caused major concerns to the dairy and beef farming communities, but there are no published studies of the economic impact of this disease. On a farm in Victoria, Australia, we assessed whether oriental theileriosis has an impact on milk production and reproductive performance in dairy cows.

23 October 2015 in Epidemiology and Infection
Verified
Journal Article
Open access
PDF file
KBK. A. Bond
K. A. Bond
GVG. Vincent
G. Vincent
CWC. R. Wilks
C. R. Wilks
LFL. Franklin
L. Franklin
BSB. Sutton
B. Sutton
SFSimon Firestone
Simon Firestone
SUMMARY: A recent outbreak of Q fever was linked to an intensive goat and sheep dairy farm in Victoria, Australia, 2012-2014. Seventeen employees and one family member were confirmed with Q fever over a 28-month period, including two culture-positive cases. The outbreak investigation and management involved a One Health approach with representation from human, animal, environmental and public health. Seroprevalence in non-pregnant milking goats was 15% [95% confidence interval (CI) 7–27]; active infection was confirmed by positive quantitative PCR on several animal specimens. Genotyping ofCoxiella burnetiiDNA obtained from goat and human specimens was identical by two typing methods. A number of farming practices probably contributed to the outbreak, with similar precipitating factors to the Netherlands outbreak, 2007-2012. Compared to workers in a high-efficiency particulate arrestance (HEPA) filtered factory, administrative staff in an unfiltered adjoining office and those regularly handling goats and kids had 5·49 (95% CI 1·29–23·4) and 5·65 (95% CI 1·09–29·3) times the risk of infection, respectively; suggesting factory workers were protected from windborne spread of organisms. Reduction in the incidence of human cases was achieved through an intensive human vaccination programme plus environmental and biosecurity interventions. Subsequent non-occupational acquisition of Q fever in the spouse of an employee, indicates that infection remains endemic in the goat herd, and remains a challenge to manage without source control.

1 December 2011 in Preventive Veterinary Medicine
Verified
Journal Article
Closed access
SFSimon Firestone
Simon Firestone
MWMichael Ward
Michael Ward
RCRobert Christley
Robert Christley
Navneet DhandNavneet Dhand
Navneet Dhand


1 June 2011 in Preventive Veterinary Medicine
Verified
Journal Article
Closed access
SFSimon Firestone
Simon Firestone
KSKathrin A. Schemann
Kathrin A. Schemann
JTJenny-Ann L.M.L. Toribio
Jenny-Ann L.M.L. Toribio
MWMichael Ward
Michael Ward
Navneet DhandNavneet Dhand
Navneet Dhand