scholarly journals Perinatal transmission of SARS-CoV-2 and transfer of maternal IgG/neutralizing anti-SARS-CoV-2 antibodies from mothers with asymptomatic infection during pregnancy

Infection ◽  
2021 ◽  
Author(s):  
Nandini Malshe ◽  
Suprabha K. Patnaik ◽  
Sanjay Lalwani ◽  
Pradeep Suryawanshi ◽  
Ruta Kulkarni ◽  
...  
Keyword(s):  
Perinatal Transmission ◽  
Asymptomatic Infection ◽  
Maternal Igg

Fatal Echovirus 11 Disease in Premature Neonates

PEDIATRICS ◽  
1980 ◽  
Vol 66 (5) ◽  
pp. 775-780
Author(s):  
John F. Modlin
Keyword(s):  
Premature Infants ◽  
Case Reports ◽  
Febrile Illness ◽  
Neutralizing Antibody ◽  
Perinatal Transmission ◽  
Laboratory Studies ◽  
Maternal Illness ◽  
False Diagnosis ◽  
Abruptio Placenta ◽  
Maternal Igg

Four cases of fatal echovirus 11 disease occurred in premature infants during a community outbreak of enteroviral disease in Massachusetts in 1979. Each infant developed nonspecific symptoms and jaundice at 4 to 6 days of age, and subsequent progressive hepatic failure and generalized bleeding. Only one infant survived longer than six days. Virus was recovered from multiple sites premortem, and from virtually all tissue cultured at autopsy. Myocarditis was not present clinically or pathologically. Clinical and laboratory evidence implicated perinatal transmission of virus from mother to infant. Three mothers experienced a febrile illness with abdominal pain within the last five days of pregnancy. In two, the illness led to a false diagnosis of abruptio placenta and interruption of pregnancy by cesarian section. Review of case reports of this syndrome caused by other echovirus serotypes revealed that many had similar perinatal events. Each mother ultimately developed neutralizing antibody to echovirus 11. However, all four infants were born without passively acquired antibody, probably because they were delivered prior to the appearance of specific maternal IgG. Although laboratory studies by others have shown other factors may be responsible for the ability of enterovirus to cause overwhelming disease in neonates, uncontrolled data from these four infants and their mothers suggest that timing of maternal illness in relation to delivery of the infant may also be important.

New Tests Would Help Lower Perinatal Transmission

Ob Gyn News ◽  
2005 ◽  
Vol 40 (21) ◽  
pp. 44-45
Author(s):  
HOWARD L. MINKOFF ◽  
E. ALBERT REECE
Keyword(s):  
Perinatal Transmission

Effect of coronavirus disease in patients with kidney disease in India

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1255-1259
Author(s):  
Shashi Prabha Singh ◽  
Preeti Sharma ◽  
Durgesh singh ◽  
Pradeep kumar ◽  
Rakesh Sharma ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Clinical Trials ◽  
Kidney Disease ◽  
Meta Analysis ◽  
Tertiary Care ◽  
Type Ii Diabetes Mellitus ◽  
Asymptomatic Infection ◽  
Type Ii ◽  
Cardiorespiratory Failure ◽  
Inflammatory State

Coronavirus disease 19 is a global pandemic which infects over millions of people worldwide in a limited time and changes the lifestyle, clinical spectrum lies from asymptomatic infection to pneumonitis with cardiorespiratory failure and finally death. Higher mortality occurs in senior and who are suffering from co-morbidities like chronic kidney disease, (HTN) hypertension, (DM TYPE II) diabetes mellitus or (CVD) cardiovascular diseases. However, rather than normal individuals, patients with chronic kidney disease (CKD) are under higher risk for infections. The chronic systemic inflammatory state is a significant cause for morbidity and mortality in CKD patients. The objective of this review is to discuss the pathogenesis of COVID-19 in CKD, changes observed in the immune system of CKD patients, COVID-19 infections risk in CKD and therapeutic approach of COVID-19 in CKD patients. From the standpoint of frequent renal co-morbidities in covid19 patients, renal complications were explored in covid19 patients received at level 2 tertiary care Santosh Hospital, Ghaziabad, U.P. Delhi-NCR India during March to August 2020 as per the protocol of Nephrology Society of India. Relevant clinical trials were reviewed in support. Meta-analysis and clinical trials are covered in this review study. Duplicate studies are not taken into account. The outcome of the studies shows that CKD patients are more prone to COVID-19. CKD patients are more likely infected with COVID-19 virus. Whereas in intensive care, CKD occurs more frequent than DM type II and CVD. So,COVID-19 pathogenesis in CKD patients, risk of COVID-19, immunologic changes and therapy COVID-19 in CKD can add support in the effective management of COVID-19.

DETECTION OF LEISHMANIA INFECTION IN STRAY DOGS IN HUMAN LEISHMANIASIS ENDEMIC AREA IN MYMENSINGH DISTRICT WITH ITS POSSIBLE PUBLIC HEALTH SIGNIFICANCE IN BANGLADESH

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
M. A. Hossen
Keyword(s):  
Visceral Leishmaniasis ◽  
Asymptomatic Carrier ◽  
Asymptomatic Infection ◽  
Reservoir Host ◽  
Sand Fly ◽  
Leishmania Infection ◽  
Endemic Region ◽  
Stray Dogs ◽  
Human Leishmaniasis ◽  
Strip Test

Background: Leishmaniasis is primarily caused by two species of Leishmania (L. donovani and L. infantum) of which clinical infection with L. infantum has been recognized in both humans and dogs as zoonotic disease with dogs as the main reservoir hosts in the Mediterranean, the Middle East, Asia and South America. Although L. donovani has been associated with both clinical and asymptomatic infection in humans but it is still associated with asymptomatic infection in dogs in Indian sub-continent without any evidence of zoonotic infection. Objectives: The objective of this research was to investigate the potentiality of dog as reservoir host for visceral leishmaniasis in the human leishmaniasis endemic regions in Bangladesh. Materials and Methods: A total of 20 stray dogs in the human VL endemic areas of Mymensingh district were captured for the detection VL during the period of November 2010 to May 2011. The dipstick test rK39 (Bios International; n = 20), Giemsa’s stained impression smears of liver and spleen (n = 6) and PCR with the tissue of liver and spleen (n = 6) were tested as per manufacturer instructions and conventional standard methods. Results: Out of 20 stray dogs examined, 4 (20.0%) were positive for L. donovani infection with rK39 strip test. Of the six randomly selected dogs tested with Modified Giemsa’s stained of impression smears of spleen and liver showed 2 (33.33%) positive whereas PCR technique detected 5 (83.33%) positive for L. donovani. Results of PCR showed 145bp amplicon, specific for L. donovani infection in 83.33% stray dogs. Conclusions: This study reveals that a high percentage of L. donovani asymptomatic carrier infections occur in dogs and evidence indicates that dogs and humans may potentially serve as a source of infection to sand fly vectors and accordingly dogs can be recognized as a probable animal reservoir for the Leishmania infection in the endemic region in Bangladesh. However, further studies are required to determine the ability of dogs to transmit the L. donovani to the vector sand fly in nature and its evidence on ‘One Health’ perspectives. Keywords: Visceral leishmaniasis, Endemic region, Stray dogs, rK39 strip test, Giemsa’s stained liver and spleen impression smears, PCR, Reservoir host, Mymensingh

scholarly journals Dynamic changes of acquired maternal SARS-CoV-2 IgG in infants

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xia Wang ◽  
Pu Yang ◽  
Junwen Zheng ◽  
Pin Liu ◽  
Cong Wei ◽  
...  
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Pregnant Women ◽  
Dynamic Characteristics ◽  
Perinatal Infection ◽  
Serum Antibodies ◽  
Dynamic Changes ◽  
Transfer Rates ◽  
Positive Rate ◽  
Igg Level ◽  
Maternal Igg

AbstractAt present, there are still ambiguous reports about the perinatal infection of infants born to mothers infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The dynamic characteristics of infantile serum antibodies born to mother with SARS-CoV-2 has not been well described. In this study, we analyzed the seroconversion of 27 newborns born to 26 pregnant women infected with SARS-CoV-2. The SARS-CoV-2 IgG positive rate of parturient was 80.8%, and half of their infants obtained maternal IgG. IgG transfer rates were 18.8% and 81.8% in those infants whose mother infected less and more than 2 weeks before delivery. In the first two months of life, the IgG level of infants dropped sharply to one tenth of that at birth. These results suggest that maternal SARS-CoV-2 IgG provides limited protection for infants.

scholarly journals Comprehensive and safe school strategy during COVID-19 pandemic

2021 ◽  
Vol 47 (1) ◽  
Author(s):  
Susanna Esposito ◽  
Nicola Cotugno ◽  
Nicola Principi
Keyword(s):  
School Attendance ◽  
Asymptomatic Infection ◽  
School Closure ◽  
Prevention Measures ◽  
Effective Measure ◽  
The Real ◽  
Definitive Answer ◽  
Mild Disease ◽  
Infectious Risk ◽  
Over Time

Abstract Background Although several studies have tried to evaluate the real efficacy of school closure for pandemic control over time, no definitive answer to this question has been given. Moreover, it has not been clarified whether children or teenagers could be considered a problem for SARS-CoV-2 diffusion or, on the contrary, whether parents and school workers play a greater role. The aims of this review are to discuss about children’s safety at school and the better strategies currently able to reduce the risk of SARS-CoV-2 infection at school. Main aim Compared to adults, very few cases of COVID-19 were diagnosed in children, who generally suffered from an asymptomatic infection or a mild disease. Moreover, school closure is systematically associated with the development of problems involving students, teachers and parents, particularly among populations with poor resources. Although several researches have tried to evaluate the real efficacy of school closure for pandemic control over time, no definitive answer to this question has been given. Available findings seem to confirm that to ensure adequate learning and to avoid social and economic problems, schools must remain open, provided that the adults who follow children at home and at school absolutely comply with recommendations for prevention measures and that school facilities can be optimized in order to significantly reduce the spread of infection. In this regard, the universal use of face masks in addition to hand hygiene and safe distancing in schools, at least starting from the age of 6 years, seems extremely useful. Moreover, since the beginning of the COVID-19 outbreak the use of telemedicine to manage suspected SARS-CoV-2-infected individuals in the community has appeared to be an easy and effective measure to solve many paediatric problems and could represent a further support to schools . Conclusions We think that schools must remain open, despite COVID-19 pandemic. However, several problems strictly related to school frequency and reduction of infectious risk must be solved before school attendance can be considered completely safe. A single more in-depth guideline agreed between countries with the same school problems could be very useful in eliminating doubts and fostering the compliance of students, teachers and non-teaching school staff reducing errors and misinterpretations.

scholarly journals Characterization of Salmonella serotypes prevalent in asymptomatic people and patients

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Haiyan Xu ◽  
Weibing Zhang ◽  
Kai Zhang ◽  
Yue Zhang ◽  
Zhenyu Wang ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Asymptomatic Infection ◽  
Resistance Rate ◽  
Human Infection ◽  
The Other ◽  
Resistance Testing ◽  
Multi Drug Resistance ◽  
Discriminative Ability ◽  
Source Of Infection ◽  
The Difference

Abstract Background Infection with Salmonella enterica usually results in diarrhea, fever, and abdominal cramps, but some people become asymptomatic or chronic carrier as a source of infection for others. This study aimed to analyze the difference in serotype, antimicrobial resistance, and genetic profiles between Salmonella strains isolated from patients and those from asymptomatic people in Nantong city, China. Methods A total of 88 Salmonella strains were collected from patients and asymptomatic people from 2017 to 2018. Serotyping, antimicrobial susceptibility testing, and PFGE analysis were performed to analyze the characteristics of these strains. Results Twenty serotypes belonging to 8 serogroups were identified in the 88 Salmonella strains. S. Typhimurium remained to be the predominant serotype in strains from both patients and asymptomatic people. Among the 27 strains from patients, S. Enteritidis and S. Rissen were shown as the other two major serotypes, while S. London, S. Derby, and S. Meleagridis were demonstrated as the other significant serotypes among the 61 strains from asymptomatic people. Antimicrobial resistance testing revealed that 84.1% of strains from both resources were multi-drug resistant. PFGE displayed a highly discriminative ability to differentiate strains belonging to S. Derby, S. Typhimurium, etc., but could not efficiently differentiate serotypes like S. Enteritidis. Conclusions This study’s results demonstrated that S. Typhimurium could cause human infection in both symptomatic and asymptomatic state; S. London, S. Derby, and S. Meleagridis usually cause asymptomatic infection, while S. Enteritidis infection mainly results in human diseases. The high multi-drug resistance rate detected in the antimicrobial resistance and diverse PFGE profiles of these strains implied that the strains were isolated from different sources, and the increased surveillance of Salmonella from both patients and asymptomatic people should be taken to control the disease.

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