Importance of host-viral interactions in the control of shrimp disease outbreaks

2012 ◽  
pp. 623-654
Author(s):  
Timothy W. Flegel
2020 ◽  
pp. 83-88
Author(s):  
Kseniia Artemivna Veklych

Measles is a highly contagious infectious disease caused by an RNA−containing virus of the family Paramyxoviridae and Morbillivirus genus. The most proper way to stop it is a total vaccination. At the moment, live attenuated strains of the Enders − Schwartz measles virus are used to conduct it. Although they were developed more than 50 years ago, the vaccines in use today are effective enough to create a proper immune protection that can defend against an infection for decades, if the vaccination schedule is followed. The vast majority of measles outbreaks that have been reported in Europe over the last seven years have been caused by a lack of an immune response resulting from the unprecedented coverage of the population with vaccination. The measles outbreak observed in the adult and child population of Ukraine since December 2018 indicates the need and urgency of additional efforts to curb the spread and complete elimination of the measles virus. It has been determined that more than 95 % of the population should be vaccinated to ensure an elimination of measles virus and prevent the disease outbreaks after the virus has been imported from the countries that are still endemic to measles. It is noted that as a result of successful implementation of vaccination programs, the public's attention to measles is diminished even among physicians who sometimes have a rather dubious understanding of the disease symptoms. Ensuring a complete elimination of the measles virus requires the development and implementation of additional laboratory tests for immunity, development and realization of new, more polyvalent vaccines that are more readily accepted by population, increased awareness on safety and necessity of vaccination, as well as regulation. Key words: measles, immunity, elimination, epidemiological control, vaccination.


The CDC Field Epidemiology Manual is the definitive resource for the most up-to-date guidance for epidemiologists and other experts conducting field investigations to address acute public health concerns that require prompt action. This latest edition (an update of the 3rd edition of the popular book Field Epidemiology, edited by Dr. Michael Gregg) offers practical advice to guide investigators through the core elements of field investigations, beginning with initiating operations and ending with developing interventions and communicating findings to the public. The manual also provides special considerations to address challenges that often arise during field investigations, such as addressing legal issues, working with multiple state and federal agencies, navigating a multinational outbreak investigation, and working within an incident management structure. The manual includes updated information on using new tools for field investigations, such as the latest technologies for data collection and management and incorporating data from geographic information systems (GIS). Finally, the manual includes tips for investigations in a wide variety of settings, including healthcare and community congregate settings, and different types of outbreaks, including acute enteric disease outbreaks, those suspected to be related to intentional use of biologic and toxic agents, and outbreaks of suicide, violence, and other forms of injury. The manual is written primarily for epidemiologists who will be conducting field investigations in local, state, federal, or international settings. However, others who contribute to field investigations (e.g., laboratory scientists, lawyers, experts in public policy and communications) will also find the book to be an excellent source of information. The manual is written in an easily readable format, including boxes and bulleted points, to provide greater utility for investigators in the field.


2019 ◽  
Vol 147 ◽  
Author(s):  
F. Mboussou ◽  
P. Ndumbi ◽  
R. Ngom ◽  
Z. Kassamali ◽  
O. Ogundiran ◽  
...  

Abstract The WHO African region is characterised by the largest infectious disease burden in the world. We conducted a retrospective descriptive analysis using records of all infectious disease outbreaks formally reported to the WHO in 2018 by Member States of the African region. We analysed the spatio-temporal distribution, the notification delay as well as the morbidity and mortality associated with these outbreaks. In 2018, 96 new disease outbreaks were reported across 36 of the 47 Member States. The most commonly reported disease outbreak was cholera which accounted for 20.8% (n = 20) of all events, followed by measles (n = 11, 11.5%) and Yellow fever (n = 7, 7.3%). About a quarter of the outbreaks (n = 23) were reported following signals detected through media monitoring conducted at the WHO regional office for Africa. The median delay between the disease onset and WHO notification was 16 days (range: 0–184). A total of 107 167 people were directly affected including 1221 deaths (mean case fatality ratio (CFR): 1.14% (95% confidence interval (CI) 1.07%–1.20%)). The highest CFR was observed for diseases targeted for eradication or elimination: 3.45% (95% CI 0.89%–10.45%). The African region remains prone to outbreaks of infectious diseases. It is therefore critical that Member States improve their capacities to rapidly detect, report and respond to public health events.


2021 ◽  
Vol 36 (3) ◽  
pp. 251-259
Author(s):  
Michael Rozenfeld ◽  
Kobi Peleg ◽  
Adi Givon ◽  
Miklosh Bala ◽  
Gad Shaked ◽  
...  

AbstractIntroduction:Injury patterns are closely related to changes in behavior. Pandemics and measures undertaken against them may cause changes in behavior; therefore, changes in injury patterns during the coronavirus disease 2019 (COVID-19) outbreak can be expected when compared to the parallel period in previous years.Study Objective:The aim of this study was to compare injury-related hospitalization patterns during the overall national lockdown period with parallel periods of previous years.Methods:A retrospective study was completed of all patients hospitalized from March 15 through April 30, for years 2016-2020. Data were obtained from 21 hospitals included in the national trauma registry during the study years. Clinical, demographic, and circumstantial parameters were compared amongst the years of the study.Results:The overall volume of injured patients significantly decreased during the lockdown period of the COVID-19 outbreak, with the greatest decrease registered for road traffic collisions (RTCs). Patients’ sex and ethnic compositions did not change, but a smaller proportion of children were hospitalized during the outbreak. Many more injuries were sustained at home during the outbreak, with proportions of injuries in all other localities significantly decreased. Injuries sustained during the COVID-19 outbreak were more severe, specifically due to an increase in severe injuries in RTCs and falls. The proportion of intensive care unit (ICU) hospitalizations did not change, however more surgeries were performed; patients stayed less days in hospital.Conclusions:The lockdown period of the COVID-19 outbreak led to a significant decrease in number of patients hospitalized due to trauma as compared to parallel periods of previous years. Nevertheless, trauma remains a major health care concern even during periods of high-impact disease outbreaks, in particular due to increased proportion of severe injuries and surgeries.


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