scholarly journals Serological monitoring of ornitobacteriosis in broilers in South Banat district

2014 ◽  
Vol 68 (3-4) ◽  
pp. 197-205
Author(s):  
Pavle Gavrilovic ◽  
Nikola Vaskovic ◽  
Milijan Jovanovic
Keyword(s):  
Respiratory Tract ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Natural Infection ◽  
Clinical Manifestations ◽  
Serological Response ◽  
Serum Samples ◽  
Exact Test ◽  
Specific Antibodies ◽  
Ornithobacterium Rhinotracheale

Ornithobacterium rhinotracheale is a relatively recently discovered bacterium and its role in the pathology of avian respiratory infections has not yet been clarified. Since there was no data relating to the prevalence of this infection in Serbia at the time of carrying out our investigations, we decided to explore the prevalence of the infection in broilers and its influence on clinical manifestations at the selected apizootiological area with developed poultry industry. A total of 430 blood samples from 26 flocks of broilers of different ages, from five municipalities were taken for examination. The serum samples were tested by ELISA for the presence of specific antibodies to the agent. Epizootiological investigation was carried out based on the results obtained with serological testing and epizootiological data, collected from the farms. The data were analyzed statistically to identify association between the infection and manifestation of clinical symptoms by Fisher?s exact test. Seropositive chickens were detected in 16 out of 26 examined broiler flocks at the age of 3 to 56 days. The percentage of seropositive samples per flock was 5-30%. The titer values of specific antibodies ranged from 946 to 6886. Serological response to O. rhinotracheale was evidenced in five flocks which had clinical symptoms in the form of respiratory tract disorders or stunting. However, specific antibodies against the agent were discovered in 11 flocks which did not show clinical symptoms. Statistical analysis revealed no association between the presence of infection and the appearance of clinical symptoms (p = 0.1213). The results are in agreement with those of other authors who investigated the prevalence of this infection and its manifestations in other countries. The present investigation determined indirectly, serologically a presence of O. rhinotracheale in the majority of examined broiler flocks (61,54%) and a small average number of individual seropositive chickens per flock - 10 % of all examined samples. Although O. rhinotracheale is wide-spread in intensive broiler production in South Banat its presence does not always lead to clinical manifestation of respiratory tract disorders. Seropositive chickens are detected in the first week of life, which indicates the presence of maternal antibodies. Presence of antibodies as the response of organism to the natural infection is detected in chickens after four weeks of age.

scholarly journals SEROEPIDEMIOLOGICAL INVESTIGATION OF MYCOPLASMA BOVIS IN CALVES

2015 ◽  
Vol 7 (1) ◽  
pp. 3-9
Author(s):  
Branka Vidić ◽  
Sara Savić ◽  
Živoslav Grgić ◽  
Ljiljana Suvajdžić ◽  
Nadežda Prica
Keyword(s):  
Respiratory Tract ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Antibody Test ◽  
Stress Factors ◽  
Minor Role ◽  
Mycoplasma Bovis ◽  
Upper Respiratory Tract ◽  
Serum Samples ◽  
Test Kit

Within the multifactorial etiology of respiratory infections in cattle, Mycoplasmae play an important role. Most of the Mycoplasma microorganisms play a minor role in the development of the infections in cattle, contrary to Mycoplasma bovis (M. bovis) that is commonly the primary agent of the disease. Respiratory tract mucosa is the primary colonization site of M. bovis in cattle. Colonization of the upper respiratory tract of calves with M.bovis oft en occurs within the fi rst few weeks of life. Animals with chronic infection and without clinical symptoms occasionally shed M.bovis and they are highly important for the epidemiology of the infection. Stress factors such as transportation, entrance into the feeding object, coldness, etc. are associated with the secretion of M. bovis from a nose. Diagnostic procedure relies on clinical symptoms and detection of causative agent, regardless of whether the infection is found in individual animals or in the entire herd. Serological detection of M.bovis antibodies is often a reliable diagnostic method. The most used indirect method is ELISA test. During a two-year period, blood serum samples from calves (beef cattle) were examined and analyzed. Calves originated from cattle farms (big and small) of Holstein- Friesian and Simmental breed. The total number of 3777 samples was examined applying ELISA (Biovet Inc. Mycoplasma bovis Antibody Test Kit Bovichek® M.bovis). Positive fi ndings were obtained in 182 animals, i.e. 4.81%. Th e obtained results confi rmed the presence of M.bovis in cattle herds. Further research from epizootical aspect and the role of M.bovis in the occurrence of health problems in cattle population is necessary.

scholarly journals Features of clinical manifestations and complications of acute respiratory infections in children

2019 ◽  
pp. 95-99
Author(s):  
E. Р. Merkulova
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Clinical Manifestations ◽  
Upper Respiratory Tract ◽  
Suppurative Otitis Media ◽  
Paediatric Practice ◽  
Upper Respiratory ◽  
Tract Infections

The article presents data on the prevalence of upper respiratory tract infections in paediatric practice. The following complications may pose health risks: sinusitis, acute suppurative otitis media and chronic tonsillitis. The authors provide statistical data on the prevalence of these complications, a multivariate analysis of the clinical symptoms of the diseases, the main symptoms of which are temperature reaction, leucocytosis, regenerative left shift, increased ESR. Special attention is paid to the choice of antipyretic agents that affect not only the fever, but also the inflammatory reaction of the upper respiratory tract mucosa, which may quickly ease the symptoms of the disease.

CLINIC AND COMPLICATIONS OF COVID-19 CORONAVIRUS DISEASE WITH PATHOGENESIS ELEMENTS

2020 ◽  
pp. 72-79
Author(s):  
I. V. Аndrusovich
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Tract ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Clinical Symptoms ◽  
Clinical Course ◽  
Clinical Manifestations ◽  
Second Phase ◽  
Upper Respiratory Tract

The longer the COVID−19 coronavirus pandemic lasts, the more information about its clinical manifestations is accumulated. The incubation period of COVID−19 ranges from 2 to 14 days, rarely up to 3 weeks, but in a significant number of cases an infection is not accompanied with the appearance of clinical symptoms. Currently, the following variants of the clinical course of COVID−19 can be identified as follows: viral load; subclinical; slight; uncomplicated with damage to only the upper respiratory tract; mild pneumonia, severe pneumonia, acute respiratory distress syndrome, etc. The clinical course of COVID−19 depends on the severity, the criteria of which are the intoxication manifestation, the degree of fever and the dominant syndrome. Mild / moderate forms are manifested by frequent increase in body temperature up to 38 ° C, respiratory symptoms, headache, myalgias, palpitations and general malaise. Patients stop distinguishing smells and feel the taste of food. Approximately from the 7th to the 9th days of the disease there are problems with breathing, which indicates the impairment of the lower respiratory tract and the beginning of the second phase of the disease, and its course is regarded as severe. Severe forms of the disease can also be manifested by impaired coordination of movements, slurred speech. In 1 to 4 % of patients there is developed the psychosis in the form of hallucinations. In the elderly, COVID−19 may be accompanied by delirium, lowering blood pressure. The risks of adverse disease are associated with somatic diseases: cardiovascular and nervous systems, respiratory tract, hormonal disorders, etc. Otitis, sinusitis, sepsis, bronchopulmonary infection, thrombosis, myocarditis etc. can be the complications of COVID−19. Computer tomography is an instrumental test that demonstrates the damage of lungs with coronavirus and allows to assess its severity. Key words: coronavirus infection, COVID−19, clinical variants, severity, pneumonia, acute respiratory distress syndrome.

scholarly journals The prevalence of enteroviruses that cause respiratory infections in patients with influenzavirus A/H1N1 hospitalized in the Lublin province

2014 ◽  
Vol 27 (3) ◽  
pp. 199-201
Author(s):  
Adrian Jarzynski ◽  
Agata Dubas ◽  
Malgorzata Polz-Dacewicz
Keyword(s):  
Respiratory Tract ◽  
Influenza A ◽  
Respiratory Tract Infections ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Genetic Material ◽  
Respiratory Viruses ◽  
Influenza A H1n1 ◽  
Tract Infections ◽  
Viral Respiratory

ABSTRACT Viruses that cause respiratory tract infections are the most common agents of infectious diseases in humans throughout the world. A virus that infects the respiratory system, may induce various clinical symptoms. What is more, the same symptoms may be caused by different viruses. The aim of the study was to analyze the prevalence of enteroviruses that cause respiratory infections in patients with influenzavirus A/H1N1 hospitalized in the Lublin province. The experimental material was throat and nose swabs taken from patients hospitalized in Lublin and Tomaszow Lubelski. In the group of 44 patients (20 women and 24 men) infected with influenza A/H1N1, the genetic material of enteroviruses was detected in 13 patients (29.5%). Respiratory viruses co-infections are very common in hospitalized patients. Studies show that co-infection with influenza virus and enterovirus are more common in children than in adults. Moreover, viral respiratory tract infections are independent from the patients’ gender.

Role of Human Coronaviruses in Acute Respiratory Infections and Seroprevalence of Middle East Respiratory Syndrome Coronavirus in children

2020 ◽  
Vol EJMM29 (4) ◽  
pp. 65-73
Author(s):  
Ghada A. Fahmy ◽  
Dina M. Erfan ◽  
Sondos M. Magdy ◽  
Rania A. Hassan
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Age Group ◽  
Serum Samples ◽  
Pediatric Age Group ◽  
Human Coronaviruses ◽  
Tract Infections ◽  
Low Prevalence

Background: Coronaviruses have been the focus of many studies since the emergence of SARS-CoV. Data on the role of MERS-CoV in respiratory tract infection and the seroprevalence of MERS-CoV in Egypt are limited. Objective: This study aimed to determine the role of coronaviruses in respiratory tract infections and the seroprevalence of MERS-CoV in pediatric age group. Methodology: Respiratory samples were collected from 80 children with respiratory infections for detection of coronaviruses using PCR technique. Serum samples were collected from 200 children for detection of MERS-CoV IgG immunolglobulins. Results: 4 out of 80 (5%) of the respiratory samples tested positive for coronavirus (OC43 subtype). None of respiratory samples tested positive for MERS-CoV, while MERS-CoV IgG was detected in 1% of serum samples.Conclusion: A low prevalence of coronaviruses was observed in children with respiratory infection. A seroprevalence of 1% MERS-CoV was detected. Further studies are recommended on larger scale.

Clinical, epidemiological and etiological features of severe acute respiratory infections in hospitalized patients

2021 ◽  
Vol 19 (1) ◽  
pp. 64-70
Author(s):  
S.S. Smirnova ◽  
◽  
E.V. Lelenkova ◽  
A.Yu. Markaryan ◽  
I.V. Vyalykh ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Clinical Manifestations ◽  
Hospitalized Patients ◽  
Influenza Viruses ◽  
Acute Respiratory Infections ◽  
Upper Respiratory Tract ◽  
Severe Acute Respiratory Infections ◽  
Tract Infections

Objective. To study the clinical, epidemiological and etiological characteristics of severe acute respiratory infections (SARI) in in-patients in Ekaterinburg during the epidemic season 2017–2018. Patients and methods. 403 individual medical records were studied. Etiological decoding was carried out by isolating RNA or DNA of respiratory viruses from nasopharyngeal swabs by polymerase chain reaction. Results. SARI in hospitalized patients were caused by both influenza viruses (В Yamagata – 25.2% and А(H1N1)pdm09 – 11.0%) and viruses of non-influenza etiology (respiratory syncytial virus (RS-virus) – 13.3%, rhinovirus – 12.9%, metapneumovirus – 11.0%). It was found that viruses were more often secreted in children than in adults; among children of the younger age group (0–2 years old) viruses of non-influenza etiology were detected significantly more often, and in children 7–14 years old, influenza viruses were more often isolated. Patients with upper respiratory tract infections were significantly more likely to have influenza viruses (78.9%) than patients with lower respiratory tract infections (21.1%). Conclusion. The results of the study indicate the importance of hospital surveillance for SARI from the point of view of the etiological diagnosis of respiratory infections, the study of epidemiology and typical clinical manifestations for the timely diagnosis and development of additional preventive and anti-epidemic measures. Key words: hospital surveillance, influenza, PCR diagnostics, respiratory infections, epidemiology, etiology

scholarly journals Serological diagnosis of toxoplasmosis: usefulness of IgA detection and IgG avidity determination in a patient with a persistent IgM antibody response to Toxoplasma gondii

1999 ◽  
Vol 41 (3) ◽  
pp. 175-177 ◽  
Author(s):  
Luciana C. BERTOZZI ◽  
Lisandra A. SUZUKI ◽  
Cláudio L. ROSSI
Keyword(s):  
Clinical Symptoms ◽  
Clinical Manifestations ◽  
Elisa Test ◽  
Significant Rise ◽  
Serum Samples ◽  
Toxoplasma Infection ◽  
Elisa System ◽  
Igm Antibodies ◽  
Igg Avidity ◽  
One Year

We report the detection of specific IgA antibodies and the determination of IgG avidity in sequential serum samples from a patient exhibiting significant levels of Toxoplasma-specific IgM antibodies for seven years after the onset of the clinical symptoms of toxoplasmosis. IgM antibodies were detected by an indirect immunofluorescence test and by three commercial enzyme-linked immunosorbent assays (ELISA). Anti-T. gondii IgA was quantified by the <FONT FACE="Symbol">a</FONT>-capture ELISA technique using a commercial kit. As defined by the manufacturer of the IgA ELISA test used, most patients with acute toxoplasmosis have antibody levels > 40 arbitrary units per ml (AU/mL). At this cut-off level, the patient still had a positive ELISA result (45 AU/mL) in a serum sample taken one year after the beginning of clinical manifestations. The IgG avidity-ELISA test was performed with the Falcon assay screening test (F.A.S.T.®) - ELISA system. Avidity indices compatible with a recent Toxoplasma infection were found only in serum samples taken during the first 5 months after the onset of the clinical symptoms of toxoplasmosis. These results show that the interpretation of positive IgM results as indicative of recently acquired toxoplasmosis requires additional laboratory confirmation either by other tests or by the demonstration of a significant rise in the antibody titers in sequential serum samples.

scholarly journals The longitudinal kinetics of antibodies in COVID-19 recovered patients over 14 months

2021 ◽  
Author(s):  
Tsuf Eyran ◽  
Anna Vaisman-Mentesh ◽  
Yeal Dror ◽  
Ligal Aizik ◽  
Aya Kigel ◽  
...  
Keyword(s):  
Decision Making ◽  
Decay Rate ◽  
Natural Infection ◽  
Serological Response ◽  
Specific Antibodies ◽  
Antibody Levels ◽  
Antibody Kinetics ◽  
Kinetics Of

Here, we describe the longitudinal kinetics of the serological response in COVID-19 recovered patients over the period of 14 months. The antibody kinetics in a cohort of 200 recovered patients with 89 follow up samples at 2-4 visits reveal that RBD-specific antibodies decay over the period of 14 month following the onset of symptoms. The decay rate is associated with the robustness of the response thus, recovered patients that exhibit elevated antibody levels at the first visit, experience faster decay. We further explored the longitudinal kinetics differences between recovered patients and naive BNT162b2 vaccinees. We found a significantly faster decay in naive vaccinees compared to recovered patients suggesting that the serological memory following natural infection is more robust compared to vaccination. Our data highlights the differences between serological memory induced by natural infection vs. vaccination, facilitating the decision making in Israel regarding the 3rd dose vaccination.

scholarly journals Clinical symptoms and treatment of common respiratory tract infections in relation to microbiological profiles in rural health facilities in China: implications for antibiotic stewardship

2020 ◽  
Author(s):  
Xingrong Shen ◽  
Jilu Shen ◽  
Yaping Pan ◽  
Jing Cheng ◽  
Jing Chai ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Antibiotic Stewardship ◽  
Bacterial Infections ◽  
Respiratory Tract Infections ◽  
Clinical Symptoms ◽  
Rural China ◽  
Clinical Manifestations ◽  
Antibiotic Use ◽  
Presenting Symptoms ◽  
Tract Infections

Abstract Background: This study aims to identify the extent to which current clinical practice in the treatment of common respiratory tract infections (RTIs) is consistent with presenting symptoms and microbiological characteristics at health care settings in rural China and implications for future antibiotic stewardship.Methods: The study was implemented in one village clinic and one township health center in each of four rural residential areas in Anhui Province, China. Observations, structured and semi-structured interviews were conducted to investigate antibiotic use. Sputum and throat swabs were collected for bacterial culture and susceptibility testing.Results: A total of 1068 completed the study. Antibiotics were prescribed for 87.8% of RTI patients. Of all the specimens tested, 329 (30.8%) specimens were isolated with bacteria. The most frequently detected bacteria were K. pneumonia (24.15% in all specimens), H. influenza (16.19%), H. parainfluenzae (14.77%), S.aureus (5.11%), M. catarrhalis (3.41%) and S. pneumoniae (2.27%). The bacteria detection was associated with age (OR=1.91), season (OR=0.41 to 0.60), days since infection onset (OR=1.54 to 1.81), and runny or blocked nose (OR=1.39 to 1.61), cough with green or white sputum (OR=1.47 to 1.59). Antibiotic use was only linked with limited non-specific clinical manifestations e.g., days since infection onset (OR=0.53) and sore throat (OR=1.64).Conclusions: The study reveals that antibiotics prescription is still very common in rural China which is driven mainly by non-pathological factors rather than treatment of bacterial infections. The study establishes the feasibility of conducting microbiological testing outside Tier 2 and 3 hospitals in rural China.

scholarly journals Congenital chicken pox: a clinical case of a child at the age of 6 days

2018 ◽  
Vol 9 (1) ◽  
pp. 100-105
Author(s):  
Vladimir N. Timchenko ◽  
Tatyana A. Kaplina ◽  
Svetlana L. Bannova ◽  
Maria D. Subbotina ◽  
Vera F. Sukhovetskaya ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Clinical Manifestations ◽  
Intrauterine Infection ◽  
Recombinant Interferon ◽  
Chicken Pox ◽  
Costs Of Treatment ◽  
Mother To Child ◽  
Rectal Suppositories

Chicken pox can be both acquired and congenital. The information is presented in the form of a diagram on the incidence of chickenpox in St. Petersburg, which shows that among children, the most common are children aged 3 to 6 years. A brief etiology of the varicella virus, a clinical picture, describing the typical and atypical forms of the disease. Due to the airborne pathway and the high infectivity of the infection, there is a risk of contracting seronegative pregnant women, which is 50%. It has been established that for 1,000 deliveries there are from 1 to 5 cases of chicken pox. In addition, the flow of chicken pox and lethality depends on the possibility of transmitting from mother to child protective specific maternal antibodies. Features of infection in pregnant women and fetus, the severity of intrauterine infection, depending on the timing of infection are described. The characteristics of varicella and neonatal chickenpox syndrome, as well as nonspecific clinical manifestations of the infectious process in the newborn are presented. We describe our own clinical observation of congenital varicella in a 6-day-old child, born from a mother who fell ill four days before the birth. The inclusion in the complex therapy of children with congenital chickenpox recombinant interferon-α2β with antioxidants (viferon rectal suppositories) contributes to the rapid positive dynamics of clinical symptoms, easier flow, prevents the layering of acute respiratory infections, reduces the material costs of treatment.

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