scholarly journals Trichinellosis among the human population in Vojvodina

2021 ◽  
Vol 854 (1) ◽  
pp. 012073
Author(s):  
J M Petrovic ◽  
J Z Prodanov-Radulovic ◽  
S N Medic
Keyword(s):  
Human Population ◽  
Control Measures ◽  
Human Diseases ◽  
High Morbidity ◽  
Hospitalization Rates ◽  
Food Borne ◽  
Entire Country ◽  
Ancient Times

Abstract The origin of the parasites of Trichinella species goes back to very ancient times–as far as the Paleozoic era, and the organism has been present in the territory of today’s Europe for millions of years. The first epidemic in the region of Serbia was reported in Zemun in 1923. Trichinellosis is the most important parasitic food borne disease in our country. In Vojvodina alone, 58 epidemic outbreaks were reported in the period 2015-2019 with 853 affected patients. The average incidence was 3.5 diseased individuals per 100 000 population. High morbidity and hospitalization rates and the occurrence of lethal outcomes qualifies trichinellosis as belonging to the category of relatively severe human diseases in Serbia. However, there are promising data indicating that implementation of relevant control measures and improvement of the awareness of the population have led to a statistically significant decrease in the number of diseased persons with trichinellosis in both Vojvodina and the entire country.

scholarly journals Further Advance of Gambierdiscus Species in the Canary Islands, with the First Report of Gambierdiscus belizeanus

Toxins ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 692 ◽  
Author(s):  
Àngels Tudó ◽  
Greta Gaiani ◽  
Maria Rey Varela ◽  
Takeshi Tsumuraya ◽  
Karl B. Andree ◽  
...  
Keyword(s):  
Canary Islands ◽  
Neuroblastoma Cell ◽  
Electrochemical Immunosensor ◽  
Benthic Dinoflagellates ◽  
Food Borne ◽  
Eastern Atlantic Ocean ◽  
North Eastern ◽  
Colorimetric Immunoassay ◽  
Ancient Times ◽  
First Time

Ciguatera Poisoning (CP) is a human food-borne poisoning that has been known since ancient times to be found mainly in tropical and subtropical areas, which occurs when fish or very rarely invertebrates contaminated with ciguatoxins (CTXs) are consumed. The genus of marine benthic dinoflagellates Gambierdiscus produces CTX precursors. The presence of Gambierdiscus species in a region is one indicator of CP risk. The Canary Islands (North Eastern Atlantic Ocean) is an area where CP cases have been reported since 2004. In the present study, samplings for Gambierdiscus cells were conducted in this area during 2016 and 2017. Gambierdiscus cells were isolated and identified as G. australes, G. excentricus, G. caribaeus, and G. belizeanus by molecular analysis. In this study, G. belizeanus is reported for the first time in the Canary Islands. Gambierdiscus isolates were cultured, and the CTX-like toxicity of forty-one strains was evaluated with the neuroblastoma cell-based assay (neuro-2a CBA). G. excentricus exhibited the highest CTX-like toxicity (9.5–2566.7 fg CTX1B equiv. cell−1) followed by G. australes (1.7–452.6.2 fg CTX1B equiv. cell−1). By contrast, the toxicity of G. belizeanus was low (5.6 fg CTX1B equiv. cell−1), and G. caribaeus did not exhibit CTX-like toxicity. In addition, for the G. belizeanus strain, the production of CTXs was evaluated with a colorimetric immunoassay and an electrochemical immunosensor resulting in G. belizeanus producing two types of CTX congeners (CTX1B and CTX3C series congeners) and can contribute to CP in the Canary Islands.

scholarly journals Anticancer Agents from Diverse Natural Sources

2014 ◽  
Vol 9 (11) ◽  
pp. 1934578X1400901 ◽  
Author(s):  
Jabeena Khazir ◽  
Darren L. Riley ◽  
Lynne A. Pilcher ◽  
Pieter De-Maayer ◽  
Bilal Ahmad Mir
Keyword(s):  
Clinical Trials ◽  
Natural Products ◽  
Anticancer Agents ◽  
Marine Organisms ◽  
New Drugs ◽  
Human Diseases ◽  
Cancer Drugs ◽  
Natural Sources ◽  
Anti Cancer ◽  
Ancient Times

This review attempts to portray the discovery and development of anticancer agents/drugs from diverse natural sources. Natural molecules from these natural sources including plants, microbes and marine organisms have been the basis of treatment of human diseases since the ancient times. Compounds derived from nature have been important sources of new drugs and also serve as templates for synthetic modification. Many successful anti-cancer drugs currently in use are naturally derived or their analogues and many more are under clinical trials. This review aims to highlight the invaluable role that natural products have played, and continue to play, in the discovery of anticancer agents.

Dracunculiasis: water-borne anthroponosis vs. food-borne zoonosis

2019 ◽  
Vol 94 ◽  
Author(s):  
M.T. Galán-Puchades
Keyword(s):  
Control Measures ◽  
African Countries ◽  
Secondary Importance ◽  
Food Borne ◽  
Route Of Transmission ◽  
Lower Water Level ◽  
Fish Hosts ◽  
Potential Food ◽  
Animal Reservoirs ◽  
Water Borne

Abstract Dracunculiasis is the first parasitic disease set for eradication. However, recent events related to the Dracunculus medinensis epidemiology in certain African countries are apparently posing new challenges to its eradication. Two novel facts have emerged: the existence of animal reservoirs (mainly dogs but also cats and baboons), and possibly a new food-borne route of transmission by the ingestion of paratenic (frogs) or transport (fish) hosts. Therefore, instead of being exclusively a water-borne anthroponosis, dracunculiasis would also be a food-borne zoonosis. The existence of a large number of infected dogs, mainly in Chad, and the low number of infected humans, have given rise to this potential food-borne transmission. This novel route would concern not only reservoirs, but also humans. However, only animals seem to be affected. Dracunculus medinensis is on the verge of eradication due to the control measures which, classically, have been exclusively aimed at the water-borne route. Therefore, food-borne transmission is probably of secondary importance, at least in humans. In Chad, reservoirs would become infected through the water-borne route, mainly in the dry season when rivers recede, and smaller accessible ponds, with a lower water level containing the infected copepods, appear, whilst humans drink filtered water and, thus, avoid infection. The total absence of control measures aimed at dogs (or at other potential reservoirs) up until the last years, added to the stimulating reward in cash given to those who find parasitized dogs, have presumably given rise to the current dracunculiasis scenario in Chad.

Listeriosis

2011 ◽  
Author(s):  
J. McLauchlin
Keyword(s):  
Western Europe ◽  
Economic Loss ◽  
Domestic Animals ◽  
Control Measures ◽  
Dietary Advice ◽  
Food Borne ◽  
Route Of Transmission ◽  
The Uk ◽  
Almost All ◽  
Considerable Economic Loss

Listeriosis occurs in a variety of animals including humans, and most often affects the pregnant uterus, the central nervous system (CNS) or the bloodstream. During pregnancy, infection spreads to the foetus, which will either be born severely ill or die in-utero. In non-pregnant animals, listeriosis usually presents as meningitis, encephalitis. In humans, infection most often occurs in the immunocompromised and elderly, and to a lesser extent the pregnant woman, the unborn, or the newly delivered infant. Infection can be treated successfully with antibiotics, however 20–40% of human cases are fatal..In domestic animals (especially in sheep and goats) listeriosis usually presents as encephalitis, abortion, or septicaemia, and is a cause of considerable economic loss.The genus Listeria comprises six species of Gram-positive bacteria. Almost all cases of listeriosis are due to Listeria monocytogenes although up to 10% of cases in sheep are due to Listeria ivanovii.Listeriae are ubiquitous in the environment worldwide, especially in sites with decaying organic vegetable material. Many animals carry the organism in the faeces without serious infection. The consumption of contaminated food or feed is the principal route of transmission for both humans and animals, however other means of transmission occur.Human listeriosis is rare (<1 to > 10 cases per million people in North America and Western Europe), but because of the high mortality rate, it is amongst the most important causes of death from food-borne infections in industrialized countries. In the UK, human listeriosis is the biggest single cause of death from a preventable food-borne disease. Listeriosis in domestic animals is a cause of considerable economic loss. Control measures should be directed towards both to exclude Listeria from food or feed as well as inhibiting its multiplication and survival. Silage which is spoiled or mouldy should not be used, and care should be taken to maintain anaerobic conditions for as long as possible.Dietary advice is available for disease prevention, particularly targeted at ‘at risk’ individuals to modify their diet to avoid eating specific foods such as soft cheese and pâté.

Positive Effect of Single-Dose Measles Vaccination in Reducing the Incidence of Pneumonia in Children with Measles

2020 ◽  
Author(s):  
Zafer Bağcı ◽  
Yunis Yusuf Daki
Keyword(s):  
Single Dose ◽  
Length Of Hospital Stay ◽  
Vaccination Rate ◽  
Hospitalization Rate ◽  
High Morbidity ◽  
Measles Vaccine ◽  
Hospitalization Rates ◽  
Training And Research ◽  
Measles Vaccination ◽  
Positive Effect

Abstract Aim Measles is a worldwide common, highly infectious and vaccine-preventable contagious disease with high morbidity and mortality rates. We investigated the effects of administering single-dose measles vaccination in children with measles on the incidence of pneumonia and hospitalization. Materials and methods We retrospectively analysed the hospital records of children aged 0–18 years who were diagnosed with measles within a year before the study in a training and research hospital in Mogadishu, Somalia. We compared the measles vaccine ratios, hospitalization rates, hospitalization duration and pneumonia development rates. Results We found that 34 (15.6%) patients had received measles vaccination, while 184 (84.4%) did not receive the vaccination. All the vaccinated patients received only a single dose of the vaccine. The proportion of those who had received pneumonia vaccine (14/34, 41.2%) was significantly lower than that of those who had never received a dose of measles containing vaccine (179/184, 97.3%) (p = 0.001). Moreover, patients who were immunized [n = 3 (3.1%)] had a significantly lower hospitalization rate than those who were not immunized [n = 94 (96.9%)] (p = 0.001). Conclusion The risk of pneumonia in children with measles vaccination, rate of hospitalization and length of hospital stay was significantly lower in children who had received even a single dose of the vaccine when compared with that in those who had not vaccinated. The results of this study reiterate the need for more effective global measles vaccination.

Hand-foot-and-mouth disease and weather factors in Guangzhou, southern China

2013 ◽  
Vol 142 (8) ◽  
pp. 1741-1750 ◽  
Author(s):  
T. LI ◽  
Z. YANG ◽  
B. DI ◽  
M. WANG
Keyword(s):  
Public Health ◽  
Negative Binomial ◽  
Southern China ◽  
Foot And Mouth Disease ◽  
Incidence Rates ◽  
Mouth Disease ◽  
Control Measures ◽  
High Morbidity ◽  
Weather Factors ◽  
Foot And Mouth

SUMMARYHand-foot-and-mouth disease (HFMD) is becoming one of the common airborne and contact transmission diseases in Guangzhou, southern China, leading public health authorities to be concerned about its increased incidence. In this study, we aimed to examine the effect of weather patterns on the incidence of HFMD in the subtropical city of Guangzhou for the period 2009–2012, and assist public health prevention and control measures. A negative binomial multivariable regression was used to identify the relationship between meteorological variables and HFMD. During the study period, a total of 166 770 HFMD-confirmed cases were reported, of which 11 died, yielding a fatality rate of 0·66/10 000. Annual incidence rates from 2009 to 2012 were 132·44, 311·40, 402·76, and 468·59/1 000 00 respectively. Each 1°C rise in temperature corresponded to an increase of 9·38% (95% CI 8·17–10·51) in the weekly number of HFMD cases, while a 1 hPa rise in atmospheric pressure corresponded to a decrease in the number of cases by 6·80% (95% CI −6·99 to −6·65), having an opposite effect. Similarly, a 1% rise in relative humidity corresponded to an increase of 0·67% or 0·51%, a 1 m/h rise in wind velocity corresponded to an increase of 4·01% or 2·65%, and a 1 day addition in the number of windy days corresponded to an increase of 24·73% or 25·87%, in the weekly number of HFMD cases, depending on the variables considered in the model. Our findings revealed that the epidemic status of HFMD in Guangzhou is characterized by high morbidity but low fatality. Weather factors had a significant influence on occurrence and transmission of HFMD.

scholarly journals Modeling the Impact of Optimal Control Strategies on the Dynamics of Zika Virus Disease Using the Sterile Insect Technology

2020 ◽  
pp. 13-33
Author(s):  
Atokolo William ◽  
Akpa Johnson ◽  
Daniel Musa Alih ◽  
Olayemi Kehinde Samuel ◽  
C. E. Mbah Godwin
Keyword(s):  
Optimal Control ◽  
Control Strategy ◽  
Zika Virus ◽  
Human Population ◽  
Necessary Conditions ◽  
Virus Disease ◽  
Control Strategies ◽  
Control Measures ◽  
Optimal Control Strategy ◽  
The Impact

This work is aimed at formulating a mathematical model for the control of zika virus infection using Sterile Insect Technology (SIT). The model is extended to incorporate optimal control strategy by introducing three control measures. The optimal control is aimed at minimizing the number of Exposed human, Infected human and the total number of Mosquitoes in a population and as such reducing contacts between mosquitoes and human, human to human and above all, eliminates the population of Mosquitoes. The Pontryagin’s maximum principle was used to obtain the necessary conditions, find the optimality system of our model and to obtain solution to the control problem. Numerical simulations result shows that; reduction in the number of Exposed human population, Infected human population and reduction in the entire population of Mosquito population is best achieved using the optimal control strategy.

scholarly journals Review of sheep and goat pox disease: current updates on epidemiology, diagnosis, prevention and control measures in Ethiopia

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Girma Zewdie ◽  
Getaw Derese ◽  
Belayneh Getachew ◽  
Hassen Belay ◽  
Mirtneh Akalu
Keyword(s):  
Skin Diseases ◽  
Clinical Symptoms ◽  
Central Africa ◽  
Small Ruminants ◽  
Rural Livelihoods ◽  
Control Measures ◽  
High Morbidity ◽  
African Countries ◽  
Movement Restriction ◽  
Indirect Contact

AbstractSheep pox, goat pox, and lumpy skin diseases are economically significant and contagious viral diseases of sheep, goats and cattle, respectively, caused by the genus Capripoxvirus (CaPV) of the family Poxviridae. Currently, CaPV infection of small ruminants (sheep and goats) has been distributed widely and are prevalent in Central Africa, the Middle East, Europe and Asia. This disease poses challenges to food production and distribution, affecting rural livelihoods in most African countries, including Ethiopia. Transmission occurs mainly by direct or indirect contact with infected animals. They cause high morbidity (75-100% in endemic areas) and mortality (10-85%). Additionally, the mortality rate can approach 100% in susceptible animals. Diagnosis largely relies on clinical symptoms, confirmed by laboratory testing using real-time PCR, electron microscopy, virus isolation, serology and histology. Control and eradication of sheep pox virus (SPPV), goat pox virus (GTPV), and lumpy skin disease (LSDV) depend on timely recognition of disease eruption, vector control, and movement restriction. To date, attenuated vaccines originating from KSGPV O-180 strains are effective and widely used in Ethiopia to control CaPV throughout the country. This vaccine strain is clinically safe to control CaPV in small ruminants but not in cattle which may be associated with insufficient vaccination coverage and the production of low-quality vaccines.

scholarly journals Ecological processes underlying the emergence of novel enzootic cycles—arboviruses in the neotropics as a case study

2020 ◽  
Author(s):  
Sarah Guth ◽  
Kathryn Hanley ◽  
Benjamin M. Althouse ◽  
Mike Boots
Keyword(s):  
Human Population ◽  
Emerging Infectious Diseases ◽  
Invasion Biology ◽  
Control Measures ◽  
Natural Ecosystem ◽  
International Mobility ◽  
Anthropogenic Pressures ◽  
Ecological Processes ◽  
Public Health Burden ◽  
Significant Public Health

AbstractPathogens originating from wildlife (zoonoses) pose a significant public health burden, comprising the majority of emerging infectious diseases. Efforts to control and prevent zoonotic disease have traditionally focused on animal-to-human transmission, or “spillover”. However, in the modern era, increasing international mobility and commerce facilitate the spread of infected humans, non-human animals (hereafter animals), and their products worldwide, thereby increasing the risk that zoonoses will be introduced to new geographic areas. Imported zoonoses can potentially ‘spill back’ to infect local wildlife—a danger magnified by urbanization and other anthropogenic pressures that increase contacts between human and wildlife populations. In this way, humans can function as vectors, dispersing zoonoses from their ancestral enzootic systems to establish reservoirs elsewhere in novel animal host populations. Once established, these enzootic cycles are largely unassailable by standard control measures and have the potential to feed human epidemics. Understanding when and why translocated zoonoses establish novel enzootic cycles requires disentangling ecologically complex and stochastic interactions between the zoonosis, the human population, and the natural ecosystem. We address this challenge by delineating potential ecological mechanisms affecting each stage of enzootic establishment—wildlife exposure, enzootic infection, and persistence—applying existing ecological concepts from epidemiology, invasion biology, and population ecology. We ground our study in the neotropics, where four arthropod-borne viruses (arboviruses) of zoonotic origin—yellow fever, dengue, chikungunya, and Zika viruses—have separately been introduced into the human population. This paper is a step towards developing a framework for predicting and preventing novel enzootic cycles in the face of zoonotic translocations.

scholarly journals Evaluation of Class 1 and 2 Integrons and Antibiotic Resistance Pattern in Salmonella enterica Isolated from Diarrheal Food-Borne Outbreaks in Iran

2019 ◽  
Author(s):  
S.F. Sayadnouri ◽  
M.M. Soltan Dallal ◽  
S. Akbarzadeh ◽  
R. Mazaheri Nezhad Fard
Keyword(s):  
Antibiotic Resistance ◽  
Salmonella Enterica ◽  
Control Measures ◽  
Resistance Pattern ◽  
Salmonella Spp ◽  
Chi Square ◽  
Class 1 Integron ◽  
Antibiotic Resistance Pattern ◽  
Food Borne ◽  
Class 1

Background: Salmonella spp. are major causes of food-borne disease and have been identified among many diarrheal outbreaks. The major aim of the current investigation was to evaluate the class 1 and 2 integrons and antibiotic resistance pattern in Salmonella enterica isolated from diarrheal food-borne outbreaks in Iran.  Methods: This study was carried out on 115 diarrheal feces samples obtained from food-borne outbreak in 2016 in Iran. Antimicrobial resistance patterns of 27 isolated S. enterica seovars and presence of class 1 and class 2 integrons in the serovars were investigated using conventional and molecular methods. Results were statistically analyzed using SPSS software v. 21 and Chi-Square test. Results: Overall, 27 S. enterica were characterized as 14 S. Paratyphi C, 7 S. Enteritidis, 5 S. Paratyphi D, and 1 S. Paratyphi A serovars. Results of molecular assay showed that class 1 integron presented in all and class 2 integron in three strains. All isolates with class 2 integron genes were resistant to almost all the antimicrobials. Conclusion: Most studied Salmonella strains from diarrheal food-borne outbreak of Iran in 2016 were multiple resistant to the highlighted antimicrobials. Knowledge about risk factor involving the salmonellosis and their control measures could help the national authorities to prevent the outbreaks. Further comprehensive studies with larger sample sizes are necessary to acquire more data about risk factors of multiple resistant Salmonella outbreaks in the country.

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