Legionnaires’ disease

Author(s):  
Nick Phin ◽  
Falguni Naik ◽  
Elaine Stanford ◽  
Sam Ghebrehewet

This chapter describes Legionnaires’ disease and its importance as a preventable cause of severe pneumonia—one that mainly affects older people and has a high mortality rate. The background information and epidemiology of Legionnaires’ disease describe the salient points succinctly. The approach to surveillance and public health management is described in detail, as, unlike many infectious diseases, the source of infection is in the environment and infection is not spread from person to person. A case study is used to describe a typical scenario, the principles used in the investigation, as well as the management and control of such incidents. Top tips are provided to reinforce key and essential activities.

Author(s):  
Maria Luisa Ricci ◽  
Maria Cristina Rota ◽  
Maria Grazia Caporali ◽  
Antonietta Girolamo ◽  
Maria Scaturro

Legionnaires’ disease (LD) is a severe pneumonia caused by bacteria belonging to the genus Legionella. This is a major public health concern and infections are steadily increasing worldwide. Several sources of infection have been identified, but they have not always been linked to human isolates by molecular match. The well-known Legionella contamination of private homes has rarely been associated with the acquisition of the disease, although some patients never left their homes during the incubation period. This study demonstrated by genomic matching between clinical and environmental Legionella isolates that the source of an LD cluster was a private building. Monoclonal antibodies and sequence-based typing were used to type the isolates, and the results clearly demonstrated the molecular relationship between the strains highlighting the risk of contracting LD at home. To contain this risk, the new European directive on the quality of water intended for human consumption has introduced for the first time Legionella as a microbiological parameter to be investigated in domestic water systems. This should lead to a greater attention to prevention and control measures for domestic Legionella contamination and, consequently, to a possible reduction in community acquired LD cases.


Author(s):  
Samweli Faraja Miyayo ◽  
Patrick Opiyo Owili ◽  
Miriam Adoyo Muga ◽  
Tang-Huang Lin

In 2018, 70% of global fatalities due to pneumonia occurred in about fifteen countries, with Tanzania being among the top eight countries contributing to these deaths. Environmental and individual factors contributing to these deaths may be multifaceted, but they have not yet been explored in Tanzania. Therefore, in this study, we explore the association between climate change and the occurrence of pneumonia in the Tanga Region, Tanzania. A time series study design was employed using meteorological and health data of the Tanga Region collected from January 2016 to December 2018 from the Tanzania Meteorological Authority and Health Management Information System, respectively. The generalized negative binomial regression technique was used to explore the associations between climate indicators (i.e., precipitation, humidity, and temperature) and the occurrence of pneumonia. There were trend differences in climate indicators and the occurrence of pneumonia between the Tanga and Handeni districts. We found a positive association between humidity and increased rates of non-severe pneumonia (incidence rate ratio (IRR) = 1.01; 95% CI: 1.01–1.02; p ≤ 0.05) and severe pneumonia (IRR = 1.02; 95% CI: 1.01–1.03; p ≤ 0.05). There was also a significant association between cold temperatures and the rate of severe pneumonia in Tanga (IRR = 1.21; 95% CI: 1.11–1.33; p ≤ 0.001). Other factors that were associated with pneumonia included age and district of residence. We found a positive relationship between humidity, temperature, and incidence of pneumonia in the Tanga Region. Policies focusing on prevention and control, as well as promotion strategies relating to climate change-related health effects should be developed and implemented.


2003 ◽  
Vol 30 (6) ◽  
pp. 771-788 ◽  
Author(s):  
Jacquie A. Shillis ◽  
Beverly A. Hall ◽  
Gail G. Sneden ◽  
Nell H. Gottlieb

This case study examines a nonlegislative task force as it struggled to reach internal consensus despite external-political constraints. The study highlights the convergence of politics and science, revealing complex issues likely to be confronted by advocates and public health officials. Three themes capture participants’experiences: context, sizing up the opportunities and constraints; task force process, tacit strategy to operate outside the political context and play the science card; and aftermath, a glass half full. The task force took advantage of ambiguous parameters, crafting a comprehensive statewide plan to reduce tobacco use and breaking out of the common public health paradigm of allowing budget considerations to drive program design. These internal victories could not sustain a policy success in the legislature. However, the group’s product sets science-based standards for future program development, and the task force’s process provides valuable insights into other states developing tobacco prevention and control policies.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Erick da Luz Scherf ◽  
Marcos Vinicius Viana da Silva ◽  
Janaina S. Fachini

Purpose The purpose of this paper is to explore how the COVID-19 pandemic has been managed in Brazil, especially at the Federal Administrative level, with the focus being on the implications for human rights and public health in the country. Design/methodology/approach The research is built on a qualitative design made up of a case-study and review of the literature and is based on inductive reasoning. Findings Main conclusions were that: by not making sufficient efforts to safeguard the lives of Brazilians or to strengthen public health institutions amid the pandemic, Bolsonaro’s Administration may be violating the rights to life and health, among others, by omission; it was demonstrated that the President has worked unceasingly to bulldoze anti-COVID-19 efforts, which can be better explained through the concepts of necropolitics and neoliberal authoritarianism. Research limitations/implications One of the limitations to this research is that this paper was not able to discuss more thoroughly which other human rights norms and principles (apart from the right to health, life and the duty to protect vulnerable populations) have possibly been violated amid the COVID-19 pandemic in the country. Overall, this research can help expand the literature on human rights in health management during and after emergency times. Originality/value This paper focuses on recent events and on urgent matters that need to be addressed immediately in Brazil. This study provides an innovative health policy/human rights analysis to build an academic account of the ongoing pandemic in the largest country in South America.


2010 ◽  
Vol 15 (4) ◽  
Author(s):  
H von Baum ◽  
G Härter ◽  
A Essig ◽  
C Lück ◽  
T Gonser ◽  
...  

Currently an investigation is ongoing to explore and control an outbreak of Legionnaires’ disease, affecting 65 people as of 22 January 2010, in the cities of Ulm and Neu-Ulm, south-west Germany. A hitherto unidentified wet cooling system in these twin cities is considered as the most likely source of infection.


Author(s):  
Joseph Kawuki ◽  
Quraish Sserwanja ◽  
Nathan Obore ◽  
Johnson Wang ◽  
Joseph Lau

Abstract Objective: COVID-19 being a rapidly evolving pandemic, early lessons from the first deaths must be learnt to help feed into the public health guidelines. This study, therefore, aims to present the first two deaths due to COVID-19 in Uganda and their public health relevance.Cases: The first case was a 34-year female and support staff at a health center II. She first presented with COVID-19 like symptoms before dying on 21st July 2020. The second case was an 80 years old female, who also presented with COVID-19 like symptoms before dying on 24th July 2020. The postmortem samples of both cases were confirmed positive for COVID-19. Conclusion: This study identifies a need for timely identification and testing of COVID-19 suspects, strengthening of health center capacity, as well as more awareness for effective prevention and control of COVID-19.


10.2196/18825 ◽  
2020 ◽  
Vol 22 (5) ◽  
pp. e18825 ◽  
Author(s):  
Yuxin Zhao ◽  
Sixiang Cheng ◽  
Xiaoyan Yu ◽  
Huilan Xu

Background Since the coronavirus disease (COVID-19) epidemic in China in December 2019, information and discussions about COVID-19 have spread rapidly on the internet and have quickly become the focus of worldwide attention, especially on social media. Objective This study aims to investigate and analyze the public’s attention to events related to COVID-19 in China at the beginning of the COVID-19 epidemic (December 31, 2019, to February 20, 2020) through the Sina Microblog hot search list. Methods We collected topics related to the COVID-19 epidemic on the Sina Microblog hot search list from December 31, 2019, to February 20, 2020, and described the trend of public attention on COVID-19 epidemic-related topics. ROST Content Mining System version 6.0 was used to analyze the collected text for word segmentation, word frequency, and sentiment analysis. We further described the hot topic keywords and sentiment trends of public attention. We used VOSviewer to implement a visual cluster analysis of hot keywords and build a social network of public opinion content. Results The study has four main findings. First, we analyzed the changing trend of the public’s attention to the COVID-19 epidemic, which can be divided into three stages. Second, the hot topic keywords of public attention at each stage were slightly different. Third, the emotional tendency of the public toward the COVID-19 epidemic-related hot topics changed from negative to neutral, with negative emotions weakening and positive emotions increasing as a whole. Fourth, we divided the COVID-19 topics with the most public concern into five categories: the situation of the new cases of COVID-19 and its impact, frontline reporting of the epidemic and the measures of prevention and control, expert interpretation and discussion on the source of infection, medical services on the frontline of the epidemic, and focus on the worldwide epidemic and the search for suspected cases. Conclusions Our study found that social media (eg, Sina Microblog) can be used to measure public attention toward public health emergencies. During the epidemic of the novel coronavirus, a large amount of information about the COVID-19 epidemic was disseminated on Sina Microblog and received widespread public attention. We have learned about the hotspots of public concern regarding the COVID-19 epidemic. These findings can help the government and health departments better communicate with the public on health and translate public health needs into practice to create targeted measures to prevent and control the spread of COVID-19.


2021 ◽  
Vol 45 ◽  
Author(s):  
Moniek Borsovszky ◽  
Sophie Norton ◽  
Shopna K Bag ◽  
Jen Kok

This study explores the implications of unusual presentations of Salmonella enterica subsp. enterica ser. Paratyphi (S. Paratyphi) infection for public health management, through a literature review and case study. In 2016, a 36-year-old male presented with a five-day history of right sided painful neck swelling, coryza and a two-day history of fevers after arriving in Australia from India nine weeks earlier. S. Paratyphi A was isolated from a fine needle aspirate sample. A descriptive epidemiological review was performed of confirmed cases of S. Paratyphi notified in New South Wales between 2008 and 2017. S. Paratyphi was isolated in blood and/or faecal samples in 247 cases (98.4%). Only four specimens (1.6%) were from a focal site. A literature review of extraintestinal infections of S. Paratyphi A or B was performed. Of the 41 such cases reported, 16 (39%) had a clear history of a prior gastroenteritis and/or febrile illness, or information suggested this was highly likely. No preceding gastroenteritis or febrile illness occurred in 15 (37%) of the cases. Information was reviewed and presented with a public health lens, valuable for ‘evidence-informed’ public health risk assessment of contacts and exposures related to these types of S. Paratyphi infection. S. Paratyphi infection usually presents as an enteric fever illness. Our case illustrates the variable nature of infectious diseases and the importance of laboratory testing in obtaining a diagnosis. S. Paratyphi can have unusual presentations, which may require adjustment in the public health management of the case. Public health staff should keep an open mind when investigating possible sources and assessing risk. In Western Sydney, this disease is largely associated with residents travelling to high-incidence countries to visit family and friends, and receiving family visits from these countries. The increasing number of cases of S. Paratyphi (prior to COVID-19) in Western Sydney and the importance of awareness of the risk of enteric fever to travellers to endemic regions is highlighted.


2013 ◽  
Vol 18 (32) ◽  
Author(s):  
J Jones ◽  
J Lawrence ◽  
L Payne Hallström ◽  
J Mantero ◽  
H Kirkbride ◽  
...  

Surveillance for possible international infectious disease threats to the Olympic and Paralympic Games in London, United Kingdom, was conducted from 2 July to 12 September 2012 by a collaborative team comprising representatives from the Health Protection Agency (Public Health England since April 2013), the European Centre for Disease Prevention and Control and the National Travel Health Network and Centre. Team members enhanced their usual international surveillance activities and undertook joint risk assessments of incidents identified as relevant through an agreed set of criteria designed for the Games and using tools developed for this purpose. Although team members responded to a range of international disease incidents as part of their routine roles during this period, no incident was identified that represented a threat to the Games. Six incidents were highlighted by the team that were likely to attract media attention and hence could generate political and public concern. Responding to such concern is an important aspect of the overall public health management of mass gathering events. The lessons learned about the process and outcomes of the enhanced international surveillance will help inform planning by future hosts of similar events.


2004 ◽  
Vol 9 (2) ◽  
pp. 14-15 ◽  
Author(s):  
R Cano ◽  
N Prieto ◽  
C Martin ◽  
C Pelaz ◽  
S Mateo

Epidemiological surveillance and control of travel associated cases of legionnaires´ disease are necessary tasks for public health and collaboration between countries is necessary to do this. Within the framework of the European Surveillance Scheme for Travel Associated Legionnaires' Disease (EWGLINET), European Guidelines for Control and Prevention of Travel Associated Legionnaires' Disease have been produced . This has established the reporting and response criteria when cases or clusters appear. In this paper the analysis of the information corresponding to the 46 reported clusters related to Spain is presented. Data corresponds to the period January 2001 to July 2003.


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