Detection of Porcine Respirovirus 1 (PRV1) in Poland: Incidence of Co-Infections with Influenza A Virus (IAV) and Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) in Herds with a Respiratory Disease

Porcine respirovirus 1 (PRV1) is also known as porcine parainfluenza virus 1 (PPIV1). The prevalence and the role of PRV1 infections for pig health is largely unknown. In order to assess the PRV1 prevalence in Poland, nasal swabs and oral fluids collected from pigs from 30 farms were examined with RT real-time PCR. Additionally, IAV and PRRSV infection statuses of PRV1-positive samples were examined. The results showed that the virus is highly prevalent (76.7% farms positive) and different patterns of PRV1 circulation in herds with mild–moderate respiratory disease were observed. Co-infections with IAV and PRRSV were infrequent and detected in 8 (23.5%) and 4 (11.8%) out of 34 PRV1-positive nasal swab pools from diseased pens, respectively. In one pen PRV1, IAV, and PRRSV were detected at the same time. Interestingly, PRV1 mean Ct value in samples with co-infections was significantly lower (29.8 ± 3.1) than in samples with a single PRV1 infection (32.5 ± 3.6) (p < 0.05), which suggested higher virus replication in these populations. On the other hand, the virus detection in pig populations exhibiting respiratory clinical signs, negative for PRRSV and IAV, suggests that PRV1 should be involved in differential diagnosis of respiratory problems.

SARS Antibody Testing in Children: Development of Oral Fluid Assays for IgG Measurements

We report on the first large-scale assessment of the suitability of oral fluids for detection of SARS-CoV-2 antibody obtained from healthy children attending school. The sample type (gingiva-crevicular fluid, which is a transudate of blood but is not saliva) can be self collected.

Simple Analytical Strategy for Screening Three Synthetic Cathinones (α-PVT, α-PVP, and MDPV) in Oral Fluids

Synthetic cathinones are analogue compounds of the plant based stimulant cathinone. Its use, abuse, and related consumption complications have steadily increased in the last years. For this reason, there is a need for innovative analytical approaches that enable its rapid screening in biological matrices (e.g., oral fluids). The present work proposes a new analytical methodology by combining bar adsorptive microextraction followed by microliquid desorption and gas chromatography coupled to mass spectrometry (BAµE-µLD/GC-MS) for screening three synthetic cathinones (α-PVP, α-PVT, and MDPV) in oral fluids. The optimization of the BAµE-µLD/GC-MS methodology was successfully applied for the analysis of the target compounds in oral fluids. The results show average recoveries between 43.1 and 52.3% for the three synthetic cathinones. Good selectivity was also noticed. The developed methodology presents itself as an alternative tool to screen these compounds in oral fluids. To the best of our knowledge, this is the first work that combines a microextraction sorption-based technique followed by GC-MS analysis for the screening of synthetic cathinones in oral fluids.

Decrease in the Use of Parenteral Fluids in Premature Infants from 31 to 34 Weeks of Gestation at Birth

Introduction: Some of the practices in medicine are carried out of habit without proven benefits. This is the case of premature babies from 31 to 34 weeks of gestation who are always given parenteral fluids, even though this practice has been associated with an increase incidence of infection. In 2017, we started a protocol of parenteral fluid restriction. To administer nutrition/fluids, we used oral fluids by suction if this was possible or otherwise by oral/nasogastric tube at volumes of 15-20 mL intake every 3 hours, with 5 mL increments every 12-24 hours until 200 mL/K/day was achieved, always using breast milk when possible.Material and methods: The present study sought to compare cases before and after this new policy. For this work, we review all premature babies between 31-34 weeks of gestation discharged home in two periods of time, the first from 01/01/2012 to 12/31/2017 and the second from 01/01/2018 to 08/31/2021. The number of cases with and without parenteral fluids (PF), the incidence of infection, the weight at admission and discharge, and the fall in the weight Z score between birth and discharge were compared. Both the anthropometric and outcome variables were compared using the different statistical methods according to each variable.Results: 725 cases were found with the described characteristics. The groups before and after the intervention did not show significant differences in their general demographic characteristics. A lower use of PF was observed in the second period from 348 cases (79%) to 70 (24%), p &lt;0.001 and fewer days of use (4.1 days/case vs 1.3, p &lt;0.0001) of PF. The weight at discharge and the change in weight Z-score were the same in both groups. Infections went from three cases to zero but it was not statistically significant. There were no complications due to less use of PF.Discussion: This study showed that the use of PF is not associated with significant changes in outcomes of interest, which reinforces that its use does not generate any benefit for the patient. Larger number of cases is required to detect differences in low incidence events such as infections.

Knowledge, attitude and practice of infection control from aerosol generating procedure in clinical setting among dentist during COVID-19 pandemic: A multi centric survey

Dentistry is the profession in which there is a high risk of contagion due to the exposure to aerosol/droplets, saliva and blood which is produce during the majority of dental procedures. SARS-CoV-2 therefore can be transmitted from an infected individuals through inhalation of aerosol/droplets or by direct contact with mucous membrane, oral fluids, contaminated instruments and surfaces. The present study was proposed to assess the level of awareness, perception, and attitude regarding COVID-19 and infection control among dentists. It was concluded that the dentists involved in the current survey showed satisfactory knowledge and a positive attitude towards COVID-19 during the outbreak.

Comparative Susceptibility of Madin–Darby Canine Kidney (MDCK) Derived Cell Lines for Isolation of Swine Origin Influenza A Viruses from Different Clinical Specimens

Madin–Darby canine kidney (MDCK) cells are commonly used for the isolation of mammalian influenza A viruses. The goal of this study was to compare the sensitivity and suitability of the original MDCK cell line in comparison with MDCK-derived cell lines, MDCK.2, MDCK SIAT-1 and MDCK-London for isolation of swine-origin influenza A viruses (IAV-S) from clinical specimens. One-hundred thirty clinical specimens collected from pigs in the form of nasal swabs, lung tissue and oral fluids that were positive by PCR for the presence of IAV-S RNA were inoculated in the cell cultures listed above. MDCK-SIAT1 cells yielded the highest proportion of positive IAV-S isolations from all specimen types. For nasal swabs, 58.62% of the specimens were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (36.21%), and conventional MDCK and MDCK.2 cells (27.5%). For lung specimens, 59.38% were IAV-S positive in MDCK-SIAT1 cells, followed by MDCK-London (40.63%), and conventional MDCK and MDCK.2 cells (18.75–31.25%). Oral fluids yielded the lowest number of positive virus isolation results, but MDCK-SIAT1 cells were still had the highest rate (35%) of IAV-S isolation, whereas the isolation rate in other cells ranged from 5–7.5%. Samples with lower IAV-S PCR cycle threshold (Ct) values were more suitable for culturing and isolation. The isolated IAV-S represented H1N1-β, H1N2-α, H1N1pdm and H3N2 cluster IV and cluster IVB viruses. The result of the current study demonstrated the importance of using the most appropriate MDCK cells when isolating IAV-S from clinical samples.

Association Between Source of Treatment and Quality of Childhood Diarrhea Management Among Under-Five Children in Nigeria

Background and Objective: Despite the availability of low-cost and effective interventions, diarrhea remains one of the leading causes of under-five morbidity and mortality in Nigeria. We assessed the relationships between the source and quality of treatment for children with diarrhea in Nigeria. Methods: We analyzed cross-sectional data on 3,956 under-five children with a recent diarrheal episode, from the 2018 Nigeria Demographic and Health Survey. The outcome was quality of diarrhea management based on the administration of the following treatment recommendations: oral rehydration salt (ORS), zinc supplementation, increased oral fluids, and continued feeding. The exposure was the source of treatment (none; traditional/informal; public hospitals/health centers; private hospitals/clinics; and community-based services). Using adjusted, multivariable logistic regression, we estimated the odds ratio (OR) and 95% confidence intervals (CI) to predict the factors related to the quality of diarrhea management. Results: In all, only 1 in 5 children received all the four recommended diarrhea interventions. The odds of good quality diarrhea management were higher among children who received treatment in public hospitals/health centers, private hospitals/clinics, and community-based services compared to those of children who did not receive treatment (OR=2.52, 95% CI=1.89-3.34; OR=2.46, 95% CI=1.90-3.16; and OR=1.91, 95% CI=1.40-2.59, respectively). Compared to children whose parents did not seek treatment, the odds of receiving ORS ranged from 2.1 times (OR: 2.11, 95% CI=1.44-3.11) for seeking care in traditional/informal sources to 12.3 times (95% CI=8.81-17.15) in public hospitals/health centers. We observed similar trends for zinc supplementation. The odds of increased oral fluids were higher in public and private hospitals/clinics (OR=1.44, 95% CI=1.03-2.01 and OR=2.08, 95% CI=1.57-2.76, respectively). Across all settings, the odds of continued feeding were significantly lower among children who received treatment compared to children who did not receive treatment. Conclusion and Implications for Translation: Our findings indicate poor quality diarrhea management across various treatment settings. Policies and programs that encourage caregivers to seek treatment and improve the quality of care may contribute to reducing childhood diarrhea-related morbidity and mortality in Nigeria. Copyright © 2021 Olorunsaiye et al. Published by Global Health and Education Projects, Inc. This is an open-access article distributed under the terms of the Creative Commons Attribution License CC BY 4.0.

Oral surgery in and after the COVID-19 period from the consultation to the operating room

Severe acute respiratory syndrome (SARS) caused by the SARS-CoV-2 virus was first reported in Wuhan, China, in December 2019 has rapidly spread worldwide at an unprecedented rate and has profound health and socioeconomic effects directly affecting all fields. From the onset of the pandemic, the authors realized the impending impact on the dental field. Dental professionals are uniquely exposed to environments with high levels of infection risk from aerosols and oral fluids. Dental treatment has become a challenge during the epidemic. However, the light of optimism has faded with the onset of vaccination. The purpose of this article is to provide guidance to dental surgeons on how to adapt their current practice during and after the COVID-19 pandemic with respect to consultation activity, surgical activity, and drug prescribing in oral surgery. Thus, an electronic search was performed from PubMed (MEDLINE), Scopus, Cochrane, Google Scholar and Sciencedirect databases. 35 articles were identified of which 24 were selected to compose this article. Within the limitations of this literature review, the presence of the virus is inevitable in oral surgery practice. Dentists must continue to provide care to their patients while monitoring the evolution of Covid-19.