Gastrointestinal manifestations of COVID-19 and possibility of feco-oral route of transmission

2021 ◽  
Vol 1 (4) ◽  
pp. e183
Author(s):  
Zubair Ahmed

Covid-19 is a global health emergency originating from a small cluster of pneumonia like cases which spread to an extent to be regarded as a pandemic by WHO.in this review we discuss specifically the gastrointestinal manifestations of SARS CoV-2 positive patients in the published literature along with recent detection of SARS CoV-2 RNA in stool specimens and investigate the possible of feco oral route of viral transmission .

1982 ◽  
Vol 4 (4) ◽  
pp. 105-111
Author(s):  
Lance Chilton

Hepatitis A is a common disease in children, usually passed by the fecal-oral route. Because of its route of transmission, day care centers, especially those caring for infants and toddlers in diapers, are a likely site of passage of the disease, unlike schools, where transfer of HAV occurs uncommonly. The pediatrician encountering a case of HA must ascertain (1) that other possible aiagnoses have been eliminated, (2) whether the patient or a sibling attends a day care center, and (3) the likelihood of a common source outbreak associated with contaminated food or drink. Public health help should be sought to determine that all wider implications of the patient's disease have been taken into account. In some instances, immunoglobulin use may be indicated beyond the usual group of family and sexual contacts. In many cases, the pediatrician will be asked to stretch the indications for immunoglobulin prophylaxis; the forces may be so strong as to force mass immunoglobulin administration even if inschool transmission is unlikely. There is no specific treatment for hepatitis; previously prescribed diets and restrictions of activity are unnecessary. Recovery without complications occurs in the vast majority of patients, especially children, with HA. Hepatitis B and non-A, non-B hepatitis are less common than HA in children, except those in certain groups. Those infected have a 10% likelihood of contracting chronic active hepatitis; with HB, a chronic carrier state contributes substantially to the epidemiology of the disease. The same is likely to hold true for non-A, non-B hepatitis. In patients with needle-stick, blood product, or sexual xposure to HB, standard immunoglobulin or HBIG is recommended as prophylaxis; for those exposed to NANB, immunoglobulin may be given. A vaccine to give active protection against HB exists; one is being developed for HA as well.


2009 ◽  
Vol 4 (4) ◽  
Author(s):  
K. Suresh ◽  
TC Tan ◽  
F. illi

Infectious diseases caused by parasites continue to cause disease burdens which influence the quality of life, retards economic progress and dampens overall development especially in developing countries. The emerging group of protozoan parasites namely Blastocystis, Cryptosporidium, Isospora and Cyclospora causes generally diarrhea, bloating stomach, abdominal cramps and other gastrointestinal disturbances. Prevalence of these parasites varies from community to community and from country to country but they possess the same fecal-oral route of transmission. Contaminated water and food are the main causes of transmission with sporadic reports providing evidence for zoonotic transmission. High risk groups are the HIV-infected population, children and pet lovers. The presentation highlights the biology, prevalence, transmission, diagnosis and treatment on Blastocystis which is one of the most enigmatic protozoan. Blastocystis infection occurs worldwide but generally developing countries have higher prevalence of B. hominis (approximately 30 to 50%) than developed countries (approximately 1.5 to 10%). The parasite has been incriminated to be waterborne and our findings of cysts in the lakes and rivers screened around Klang Valley, Malaysia provides further evidence of the potential of the organism to be transmitted to humans. Moreover, river isolates of Blastocystis were found to be either subtype 1, 3 or 5 which could be of human origin and may potentially result in transmission. Detection of Blastocystis cysts has been challenging using light microscopy. The presentation will highlight the technical challenges involved in enumerating the cyst collected from water sources, the density gradient centrifugation used with both Ficoll-paque and Lymphoprep and the usage of DAPI staining and in vitro culture for detecting the parasite. Results using 0.5 L water samples from rivers showed that 28% and 72% of samples were positive for Blastocystis using in vitro culture and DAPI staining respectively. Standardization protocols involving large amount of water to be screened, the processes and steps involved especially in the centrifugation, the influence of timing of collection as well as the frequency of collection etc will be discussed.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Angel Yun-Kuan Thye ◽  
Priyia Pusparajah ◽  
Loh Teng-Hern Tan ◽  
Jodi Woan-Fei Law ◽  
Vengadesh Letchumanan ◽  
...  

The virus responsible for the COVID-19 pandemic is the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the genus Betacoronavirus. This genus also includes the severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coronavirus (MERS-CoV). The common symptoms of COVID-19 infection are fever and respiratory symptoms, but it can also involve the gastrointestinal tract (GIT), resulting in manifestations such as diarrhea, nausea and/or vomiting and abdominal pain. The emergence of COVID-19 led to public health emphasis on droplet transmission and precautions of contact with respiratory secretions. However, mounting evidence demonstrates detection of SARS-CoV-2 RNA in stool samples of COVID-19 patients. It has also been demonstrated that the host receptor angiotensin-converting-enzyme-2 (ACE-2) is highly expressed not just in respiratory cells but also in gastrointestinal sites involving the glandular cells of gastric, duodenal, and rectal epithelium. This suggests that SARS-CoV-2 can infect the digestive system, serving as another route of transmission. This review aims to study the prevalence of some of the gastrointestinal manifestations following COVID-19 infection and findings of positive SARS-CoV-2 RNA in stool specimens while making parallels to the severe acute respiratory syndrome (SARS) and the Middle East respiratory syndrome (MERS) infection. We will also discuss the possible pathophysiology of COVID-19 related gastrointestinal involvement.


2022 ◽  
Vol 8 ◽  
Author(s):  
Julie Niemann Holm-Jacobsen ◽  
Caspar Bundgaard-Nielsen ◽  
Louise Søndergaard Rold ◽  
Ann-Maria Jensen ◽  
Shakil Shakar ◽  
...  

Background: SARS-CoV-2 has resulted in a global pandemic since its outbreak in Wuhan, 2019. Virus transmission primarily occurs through close contact, respiratory droplets, and aerosol particles. However, since SARS-CoV-2 has been detected in fecal and rectal samples from infected individuals, the fecal-oral route has been suggested as another potential route of transmission. This study aimed to investigate the prevalence and clinical implications of rectal SARS-CoV-2 shedding in Danish COVID-19 patients.Methods: Hospitalized and non-hospitalized adults and children who were recently tested with a pharyngeal COVID-19 test, were included in the study. A rectal swab was collected from all participants. Hospitalized adults and COVID-19 positive children were followed with both pharyngeal and rectal swabs until two consecutive negative results were obtained. RT-qPCR targeting the envelope gene was used to detect SARS-CoV-2 in the samples. Demographic, medical, and biochemical information was obtained through questionnaires and medical records.Results: Twenty-eight of 52 (53.8%) COVID-19 positive adults and children were positive for SARS-CoV-2 in rectal swabs. Seven of the rectal positive participants were followed for more than 6 days. Two of these (28.6%) continued to test positive in their rectal swabs for up to 29 days after the pharyngeal swabs had turned negative. Hospitalized rectal positive and rectal negative adults were comparable regarding demographic, medical, and biochemical information. Furthermore, no difference was observed in the severity of the disease among the two groups.Conclusions: We provided evidence of rectal SARS-CoV-2 shedding in Danish COVID-19 patients. The clinical importance of rectal SARS-CoV-2 shedding appears to be minimal.


2021 ◽  
Vol 70 (3) ◽  
pp. 401-404
Author(s):  
YONGDONG LI ◽  
YI CHEN ◽  
HONGXIA NI ◽  
BO YI ◽  
DANDAN ZHANG ◽  
...  

SARS-CoV-2 was found in a recovered patient’s stool specimen by combining quantitative reverse transcription PCR (qRT-PCR) and genome sequencing. The patient was virus positive in stool specimens for at least an additional 15 days after he was recovered, whereas respiratory tract specimens were negative. The discovery of the complete genome of SARS-CoV-2 in the stool sample of the recovered patient demonstrates a cautionary warning that the potential mode of the virus transmission cannot be excluded through the fecal-oral route after viral clearance in the respiratory tract.


2020 ◽  
pp. 23-30
Author(s):  
Mohammed Tahir Abdalqadir

In late 2019, a novel coronavirus appeared in Wuhan, Hubei province, China, and then rapidly spread around the world. The virus produces severe and even fatal pneumonia; the most common clinical symptoms among infected persons include fever, shortness of breath, cough, fatigue, and abnormal chest CT. Though the virus first traveled from animal to human, it can now spread from human to human through direct transmission such as coughing, sneezing, and inhalation of droplets; and through contact with mucus membranes of oral, nasal, and eye. COVID-19 also can be transmitted through saliva and the fecal–oral route. The risk of cross-infection between patients and dental practitioners is high due to the nature of dental work, so this outbreak has made a powerful impact, both medically and economically, on the dentistry sector. Dental practitioners should have comprehensive knowledge of the virus and its route of transmission, and they should take proper precautions during dental treatments to protect themselves and their patients. This article provides a review of COVID-19, its transmission routes, necessary precautions during dental setting, and the virus’s impact on the economy of the dental industry.


2011 ◽  
Vol 23 (1) ◽  
pp. 79-83 ◽  
Author(s):  
L. Jeffers ◽  
J.Y. Webster-Cyriaque

Viral infections are often associated with salivary gland pathology. Here we review the pathogenesis of HIV-associated salivary gland disease (HIV-SGD), a hallmark of diffuse infiltrative lymphocytosis syndrome. We investigate the presence and contributions of viral diseases to the pathogenesis of salivary gland diseases, particularly HIV-SGD. We have detected BK viral shedding in the saliva of HIV-SGD patients consistent with viral infection and replication, suggesting a role for oral transmission. For further investigation of BKV pathogenesis in salivary glands, an in vitro model of BKV infection is described. Submandibular (HSG) and parotid (HSY) gland salivary cell lines were capable of permissive BKV infection, as determined by BKV gene expression and replication. Analysis of these data collectively suggests the potential for a BKV oral route of transmission and salivary gland pathogenesis within HIV-SGD.


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