scholarly journals Asymptomatic Patients and Immune Subjects

Encyclopedia ◽  
2022 ◽  
Vol 2 (1) ◽  
pp. 109-126
Author(s):  
Sheila Veronese ◽  
Andrea Sbarbati
Keyword(s):  
Virus Infection ◽  
Asymptomatic Patient ◽  
The People ◽  
Asymptomatic Patients

An asymptomatic patient is someone who contracts a disease but shows no symptoms. An immune subject is a person who is free from virus infection. Both of these categories of people experience the limitations of government imposed by a pandemic situation, with one important difference. Probably only the first subjects contribute, in spite of themselves, to the spread of the disease and to the contagion of the people most susceptible to the virus. This implies that their detection is essential to limit infections. Therefore, knowing the characteristics of these people and those immune to the virus can be extremely useful in mitigating the effects of the disease and/or defeating it.

scholarly journals High incidence of asymptomatic SARS-CoV-2 infection, Chongqing, China

2020 ◽  
Author(s):  
Yang Tao ◽  
Panke Cheng ◽  
Wen Chen ◽  
Peng Wan ◽  
Yaokai Chen ◽  
...  
Keyword(s):  
Asymptomatic Patient ◽  
Medical Center ◽  
Age Groups ◽  
The Elderly ◽  
Hospital Length ◽  
Hospital Length Of Stay ◽  
Asymptomatic Patients ◽  
Imported Cases ◽  
History Of ◽  
Epidemiological Characteristics

SummaryBackgroundSARS-CoV-2 has been a global pandemic, but the emergence of asymptomatic patients has caused difficulties in the prevention of the epidemic. Therefore, it is significant to understand the epidemiological characteristics of asymptomatic patients with SARS-CoV-2 infection.MethodsIn this single-center, retrospective and observational study, we collected data from 167 patients with SARS-CoV-2 infection treated in Chongqing Public Health Medical Center (Chongqing, China) from January to March 2020. The epidemiological characteristics and variable of these patients were collected and analyzed.Findings82.04% of the SARS-CoV-2 infected patients had a travel history in Wuhan or a history of contact with returnees from Wuhan, showing typical characteristics of imported cases, and the proportion of severe Covid-19 patients was 13.2%, of which 59% were imported from Wuhan. For the patients who was returnees from Wuhan, 18.1% was asymptomatic patients. In different infection periods, compared with the proportion after 1/31/2020, the proportion of asymptomatic patient among SARS-CoV-2 infected patient was higher(19% VS 1.5%). In different age groups, the proportion of asymptomatic patient was the highest(28.6%) in children group under 14, next in elder group over 70 (27.3%). Compared with mild and common Covid-19 patients, the mean latency of asymptomatic was longer (11.25 days VS 8.86 days), but the hospital length of stay was shorter (14.3 days VS 16.96 days).ConclusionThe SARS-CoV-2 prevention needs to focus on the screening of asymptomatic patients in the community with a history of contact with the imported population, especially for children and the elderly population.

scholarly journals Management of paraesophageal hernia review of clinical studies: timing to surgery, mesh use, fundoplication, gastropexy and other controversies

2020 ◽  
Vol 33 (8) ◽  
Author(s):  
Nicolás H Dreifuss ◽  
Francisco Schlottmann ◽  
Daniela Molena
Keyword(s):  
Surgical Repair ◽  
Asymptomatic Patient ◽  
Elective Surgery ◽  
Surgical Team ◽  
Acute Presentation ◽  
Emergent Operation ◽  
Postoperative Reflux ◽  
Asymptomatic Patients ◽  
Gastric Decompression ◽  
Optimal Approach

SUMMARY Despite paraesophageal hernias (PEH) being a common disorder, several aspects of their management remain elusive. Elective surgery in asymptomatic patients, management of acute presentation, and other technical aspects such as utilization of mesh, fundoplication or gastropexy are some of the debated issues. The aim of this study was to review the available evidence in an attempt to clarify current controversial topics. PEH repair in an asymptomatic patient may be reasonable in selected patients to avoid potential morbidity of an emergent operation. In acute presentation, gastric decompression and resuscitation could allow to improve the patient’s condition and refer the repair to a more experienced surgical team. When surgical repair is decided, laparoscopy is the optimal approach in most of the cases. Mesh should be used in selected patients such as those with large PEH or redo operations. While a fundoplication is recommended in the majority of patients to prevent postoperative reflux, a gastropexy can be used in selected cases to facilitate postoperative care.

scholarly journals A study on the demographic, clinical, and radiological profile of lineage B.1.1.7 (United Kingdom) strain Covid-19 patients at Telangana institute of medical sciences and research, Hyderabad

2022 ◽  
Vol 13 (1) ◽  
pp. 13-18
Author(s):  
Jayasri Helen Gali ◽  
Manasa Musku ◽  
Devireddy Pallavi Reddy ◽  
Vimala Thomas ◽  
Ehsan Ahmed Khan
Keyword(s):  
United Kingdom ◽  
Statistical Tests ◽  
Medical Sciences ◽  
Rt Pcr ◽  
Asymptomatic Group ◽  
Cross Sectional ◽  
The People ◽  
Asymptomatic Patients ◽  
Significant Difference ◽  
The Uk

Background: Emergence of variants with specific mutations in key epitopes in the spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) raises concerns pertinent to its severity. Aims and Objectives: To assess the demographics, clinico-radiological pattern, and outcome of reverse transcription-polymerase chain reaction (RT-PCR) positive isolated coronavirus disease 2019 (COVID-19) patients arrived from the United Kingdom (UK). Materials and Methods: A cross-sectional, observational study was conducted in RT-PCR positive COVID-19 patients arrived from the UK, from December 2020 to February 2021. Nasopharyngeal samples of all patients were sent for whole-genome sequencing of SARS-CoV-2. The aimed parameters were compared between the B.1.17 positive and non-B.1.1.7 groups, among the people, arrived from the UK. All statistical tests with P<0.05 were considered significant. Results: A total of 59 SARS-CoV2 infected patients, who arrived from the UK, were isolated from December 2020 to February 2021 at Telangana Institute of Medical Sciences hospital, Hyderabad, were enrolled in the study. Of these, 27 patients (mean age-31.81±11.28 years) were infected with the B.1.1.7, diagnosed by whole genomic sequencing. Males were predominant in our study. Personal habits such as smoking, alcohol intake were higher among the sequenced group with a significant P<0.05. The most common symptoms observed in the sequenced group were cough (22.22%), sore throat (22.22%), cold (11.11%), fever (11.11%), and in the unsequenced group were cough (22.22%), cold (6.25%), fever (6.25%). In the sequenced group, chest X-ray posteroanterior view was normal in 74%, patchy ground-glass opacities was observed in 25.92% patients, whereas in the unsequenced group it was 84.37% and 15.62%, respectively. Asymptomatic patients, observed in the sequenced and unsequenced group were 48.18% and 78.12%, respectively, and symptomatic patients were 51.85% and 21.87%, respectively. We found a statistically significant difference between sequenced and unsequenced patients in the asymptomatic group with a significant P<0.05. In the sequenced and unsequenced group, mild cases were 48.18% and 18.75%, moderate cases were 3.7% and 3.12%, respectively. We found no evidence of an association between disease severity and lineage B.1.17. Conclusion: Our data, within the context and limitations of a real-world study, provide initial reassurance that severity in hospitalized patients with B.1.1.7 is not markedly different from severity in those without B.1.1.7.

scholarly journals High incidence of asymptomatic SARS-CoV-2 infection, Chongqing, China

2020 ◽  
Author(s):  
Yang Tao ◽  
Panke Cheng ◽  
Wen Chen ◽  
Peng Wan ◽  
Yaokai Chen ◽  
...  
Keyword(s):  
Asymptomatic Patient ◽  
Medical Center ◽  
Age Groups ◽  
The Elderly ◽  
Hospital Length ◽  
Hospital Length Of Stay ◽  
Asymptomatic Patients ◽  
Imported Cases ◽  
History Of ◽  
Epidemiological Characteristics

Abstract Background SARS-CoV-2 has been a global pandemic, but the emergence of asymptomatic patients has caused difficulties in the prevention of the epidemic. Therefore, it is significant to understand the epidemiological characteristics of asymptomatic patients with SARS-CoV-2 infection. Methods In this single-center, retrospective and observational study, we collected data from 167 patients with SARS-CoV-2 infection treated in Chongqing Public Health Medical Center (Chongqing, China) from January to March 2020. The epidemiological characteristics and variable of these patients were collected and analyzed. Findings 82.04% of the SARS-CoV-2 infected patients had a travel history in Wuhan or a history of contact with returnees from Wuhan, showing typical characteristics of imported cases, and the proportion of severe Covid-19 patients was 13.2%, of which 59% were imported from Wuhan. For the patients who was returnees from Wuhan, 18.1% was asymptomatic patients. In different infection periods, compared with the proportion after 1/31/2020, the proportion of asymptomatic patient among SARS-CoV-2 infected patient was higher(19% VS 1.5%). In different age groups, the proportion of asymptomatic patient was the highest(28.6%) in children group under 14, next in elder group over 70 (27.3%). Compared with mild and common Covid-19 patients, the mean latency of asymptomatic was longer (11.25 days VS 8.86 days), but the hospital length of stay was shorter (14.3 days VS 16.96 days). Conclusion The SARS-CoV-2 prevention needs to focus on the screening of asymptomatic patients in the community with a history of contact with the imported population, especially for children and the elderly population.

scholarly journals Infrequency of asymptomatic malaria in an endemic area in Amazonas, Brazil

1988 ◽  
Vol 21 (2) ◽  
pp. 51-54 ◽  
Author(s):  
Aluizio Prata ◽  
Margarita Urdaneta ◽  
Patrick B. McGreevy ◽  
Mauro Shugiro Tada
Keyword(s):  
Endemic Area ◽  
Easy Access ◽  
Asymptomatic Malaria ◽  
Initial Examination ◽  
Treatment Services ◽  
The People ◽  
Asymptomatic Patients ◽  
Parasitological Diagnosis ◽  
Asymptomatic Infections ◽  
Treat All

A malaria survey was conducted in an area of high transmission (Costa Marques, Rondonia, Brazil) to determine the prevalence of asymptomatic parasitemia and its clinical significance. Most of the people surveyed were immigrants who had lived in the endemic area < 5 years. The people had easy access to free diagnostic and treatment services at the Malaria Clinic in the town of Costa Marques. The prevalence of plasmodial parasitemia in 344 people was 22%. There were 36 individuals with asymptomatic infections among the 77 parasitemic patients. During the two days following the initial examination, 19 ofthe 36 individuals: with asymptomatic infections developed malaria. Among the 17 patients who remained asymptomatic for > 2 days, 4 had only gametocytes, 1 had taken inadequate anti-malarial treatment, 3 were under treatment and 2 moved. Six asymptomatic patients denied the use of anti-malarial drugs and they developed malaria 3-6 days after the initial parasitological diagnosis. The final patient remained asymptomatic during the 7 day observation period. He had a history of > 40 malaria attacks and denied the use of antimalarial treatment. With the exception of the latter all of the other asymptomatic patients, were either in the incubation period or had been treated It is concluded that asymptomatic malaria is rare in the Costa Marques area and that it is necessary to treat all individuals with plasmodial parasitemia.

Routine imaging studies for the posttreatment surveillance of breast and colorectal carcinoma.

1991 ◽  
Vol 9 (5) ◽  
pp. 837-842 ◽  
Author(s):  
A R Kagan ◽  
R J Steckel
Keyword(s):  
Laboratory Tests ◽  
Asymptomatic Patient ◽  
Screening Mammography ◽  
Imaging Studies ◽  
Patients With Cancer ◽  
Regular Screening ◽  
Asymptomatic Patients ◽  
Routine Surveillance ◽  
Autopsy Data

Current recommendations on follow-up procedures for patients who have been treated for cancer include imaging studies and other laboratory tests at relatively frequent intervals. At least two questions should be asked to evaluate the benefits of this practice for patients: Do frequent routine surveillance tests detect recurrences "earlier" in asymptomatic patients? and Does earlier treatment of these recurrences reduce morbidity or prolong survival? The practical import of surveillance with imaging and laboratory tests for recurrence in patients with cancer of the breast and colon is discussed. Reported autopsy data, findings at elective reoperation, and clinical data have been examined to ascertain the justification for routine periodic tests in the treated but asymptomatic patient. It is concluded that earlier detection of a local recurrence or of metastatic disease through periodic tests in the asymptomatic patient with breast or colon cancer rarely alters the treatment or the outcome. A notable exception is regular screening mammography following treatment for adenocarcinoma of the breast.

scholarly journals IoT Enabled Wearable Device for COVID Safety and Emergencies

2021 ◽  
Vol 15 (03) ◽  
pp. 146
Author(s):  
Santhosha Rao
Keyword(s):  
Virus Infection ◽  
Internet Of Things ◽  
Healthy Lifestyle ◽  
Low Cost ◽  
Cost Effective ◽  
Wearable Device ◽  
Measured Parameter ◽  
Normal Range ◽  
Death Rates ◽  
The People

The worldwide outbreak of COVID-19 has significantly changed the mindset of the people and over the period they started practicing healthy lifestyle to contain the spread of the virus. Despite this, increase in the number of cases and death rates across the globe are major cause of concern. In addition to maintaining the healthy lifestyle it is also essential to exploit the technological advancements in the field of Internet of Things (IoT) in designing a cost-effective wearable device which could possibly indicate the early stages of virus infection. In this work, a low cost IoT enabled wearable device is designed which generates alerts in case of any of the measured parameter goes out of the normal range besides sending notifications.

scholarly journals Urine nucleic acid test positive in an asymptomatic patient with novel coronavirus 2019 infection: a case report

2020 ◽  
Author(s):  
Yaoyong Wang ◽  
Xinjian Chang ◽  
Jianguo Ren ◽  
Dongyan Li ◽  
Changfei Wang ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Throat Swab ◽  
Asymptomatic Patient ◽  
Clinical Manifestations ◽  
Nucleic Acid Test ◽  
Asymptomatic Patients ◽  
Sources Of Infection ◽  
Novel Coronavirus ◽  
Acid Test

Abstract Background: With the emergence of coronavirus disease 2019 in many places around the world, the main medical resources currently focus on the treatment of confirmed patients and the screening of suspected cases. Asymptomatic patients are difficult to detect, but they may be contagious, which makes epidemic control more difficult. We found a case of asymptomatic patient with positive urine coronavirus nucleic acid test, and we hope to attract attention of all circles.Case presentation: An asymptomatic patient with novel coronavirus infection was found in an epidemiological investigation of patients with confirmed coronavirus disease 2019. The patient was admitted to the hospital on February 24, 2020. She had no clinical manifestations such as fever, dry cough, and fatigue, and no abnormal signs. The examination showed that her throat swab was negative for nucleic acid but the urine was positive for nucleic acid. She was given antiviral and symptomatic supportive treatment. On February 26, her throat swab was checked for nucleic acid positive. On March 3 and 5, her throat swab and urine nucleic acid were negative. On March 9 and 12, her throat swab nucleic acid were negative. The patient was discharged from the hospital on March 13 and continued to be isolated and observed outside the hospital. Follow-up was conducted on March 26, the patient did not have any discomfort, the throat swab nucleic acid test was negative, and the isolation was lifted.Conclusion: There are asymptomatic patients with coronavirus disease 2019, and their urine may be one of the sources of infection.

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