Clinical and epidemiological features of patients with COVID-19 reinfection: a systematic review.

Recurrent positivity in a patient with COVID-19 may be due to various reasons, not necessarily reinfection. There is concern about the occurrence frequency of reinfection. Five databases and a preprint/preprint repository were searched. All case reports, case series, and observational studies were included. Bias was assessed for each study with the Newcastle-Ottawa Scale tool and reported according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA-2020). After eligibility, 77 studies were included for qualitative synthesis (52 case reports, 21 case series, and four case-controls; 1131 patients included). Of these, 16 studies described a second contact with the SARS-CoV-2 positive case, five studies described healthcare profession-related infection, ten studies described that the source of reinfection was likely to be from the community, one study described travel-related infection, nine studies described vulnerability-related infection due to comorbidity. The mean number of days from discharge or negative test to reinfection ranged from 23.3 to 57.6 days across the different included studies. The risk of bias for all case report/series studies was moderate/high. For observational studies, the risk of bias was low. Reinfection of patients with COVID-19 occurs between the first and second month after the first infection, but beyond, and 90 days have been proposed as a point to begin to consider it. The main factor for reinfection is contact with COVID-19 positive cases.

Building the social innovation for health ecosystem in Latin America: Experiences and learning from SIHI-LAC

Social innovation for health has grown in relevance and momentum across Latin America.1-5 Yet, the potential of social innovation for health appears mostly untapped, with one reason for this being the limited investment to build strong ecosystems that can support social innovation initiatives.6-8

INDUCTION IMMUNOSUPPRESSION AND OUTCOME IN EARLY KIDNEY TRANSPLANT RECIPIENTS WITH COVID-19

BACKGROUND AND AIMS: COVID-19 in kidney transplants has a high risk of complications and mortality, especially in older recipients diagnosed during the early period after transplantation. Management of immunosuppression has been challenging during the pandemic. We investigated the impact of induction immunosuppression, either basiliximab or thymoglobulin, on the clinical evolution of kidney transplants developing COVID-19 during the early period after transplantation. METHOD: Kidney transplant recipients with <6 months with a functioning graft diagnosed of COVID-19 from the initial pandemic outbreak (March 2020) until 31 July 2021 from different Spanish centres participating in a nationwide registry. RESULTS: A total of 127 patients from 17 Spanish centres developed COVID-19 during the first 6 months after transplantation, 73 (57.5%) received basiliximab and 54 (42.5%) thymoglobulin. Demographics were not different between groups, but patients receiving thymoglobulin were more sensitized (cPRA of 32.7% ± 40.8% versus 5.6% ± 18.5%) and more frequently re-transplanted (30% versus 4%). Recipients older than 65 years treated with thymoglobulin showed the highest rate of acute respiratory distress syndrome [64.7% versus 37.1% for older recipients receiving thymoglobulin and basiliximab (P < .05), and 23.7% and 18.9% for young recipients receiving basiliximab and thymoglobulin (P > .05)] and the poorest survival [mortality rate of 64.7% and 42.9% for older recipients treated with thymoglobulin and basiliximab, respectively (P < .05), and 8.1% and 10.5% for young recipients treated with thymoglobulin and basiliximab (P > .05)]. Older recipients treated with thymoglobulin showed the poorest survival in the Cox's regression model adjusted for comorbidities. CONCLUSION: Thymoglobulin should be used with caution in older recipients during the present pandemic era.

Hospitalization at home and in medicalized hotels during the first wave of the COVID-19 pandemic: a case report

The COVID-19 pandemic has led the health system to make adjustments and changes in order to face the healthcare emergency, and to consider other healthcare modalities such as hospitalization at home (HaH). During the first wave of the pandemic in 2020, the HAH multidisciplinary and cross-sectional team of the Hospital Clínic of Barcelona managed at home COVID-19 patients as well as non-COVID-19 patients, and was also in charge of managing a medicalized hotel We present the case of a patient admitted to HaH with diagnoses of acute prostatitis and COVID-19 during the first wave of the pandemics, who was managed in both settings. This case report is an example of the importance of continuity of care The HaH team, experienced and trained on conducting home visits, has adapted to the new pandemic situation, providing quality care for patients. © 2021 DAE Editorial, Grupo Paradigma. All rights reserved.

Kidney transplant patients infected by SARSCoV-2 pneumonia treated with remdesivir: Cases reports

BACKGROUND AND AIMS: Remdesivir is the only treatment that has been shown to be useful against SARS-CoV-2 infection. It shorts hospitalization time compared to placebo. Kidney transplant (KT) patients were not included in these studies, therefore, its effects in this population is limited to some published cases. METHOD: We performed a retrospective observational study that included all KT patients admitted between August 01, 2020 and November 17, 2020 with SARS-CoV-2 pneumonia who received treatment with remdesivir. Patients received a 200mg loading dose followed by 100 mg/day maintenance dose for 5 days. The objective of this study was to describe the experience of a cohort of KT patients treated with remdesivir. RESULTS: A total of 36 KT patients developed SARS-CoV-2 infection, 6 of them received treatment with remdesivir. The rest of the patients did not receive the drug due to either CKD-EPI less than 30 mL/min or they did not present clinical criteria. In addition to remdesivir, all pacients received dexamethasone and anticoagulation therapy. Immunosuppression was suspended in all patients, maintaining only dexamethasone. 50% were men, the median age was 58.5 (52.75-68) years. 67% had unknown underlying kidney disease, 83% were hypertensive and 33% had diabetes. All patients received KT from deceased brain donor and 50% received thymoglobulin as induction treatment. Median time from transplantation was 49 (20.5-135.5) months, with median glomerular filtration at admission of 47.5 (42.25-63.25) mL/min. The most frequent clinical manifestation was dry cough and dyspnea (83%), followed by tachypnea and fever (67%). Chest X-rays of all patients showed pulmonary infiltrates and required low oxygen flow therapy upon admission, requiring high flow nasal therapy in 33% of cases during admission. Only 17% of the cases presented deterioration of the graft function, not requiring hemodialysis in any case, and all recovered renal function at hospital discharge. No patient died or required admission to the critical care unit. Median days of admission was 12 (10-18) days. CONCLUSION: KT patients with SARS-CoV-2 pneumonia under treatment with remdesivir have a good clinical course, with few cases of renal function deterioration and a low mortality rate. Additional studies are necessary with a larger number of patients to improve the knowledge of remdesivir in KT with SARS-CoV-2 infection.

Routine biomarkers for the severity of COVID-19 pneumonia may present differently in kidney transplant recipients

BACKGROUND AND AIMS: The treatment of coronavirus disease (COVID-19) is based on the patient's clinical status and levels of inflammatory biomarkers. The comparative activity of these biomarkers in KT patients with COVID-19 pneumonia from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and non-SARSCoV- 2 aetiologies is unknown. The aim of this study was to compare the clinical presentation and inflammatory parameters at admission of KT patients with COVID- 19 pneumonia and those with non-COVID-19 pneumonia over the same period. METHOD: Biomarkers were measured and compared between KT patients with COVID-19 pneumonia (n=42) and non-COVID-19 pneumonia (n=18) from March to November 2020. RESULTS: Both groups showed comparable demographics. The COVID-19 KT patients had fewer neutrophils (4,650 [2,925-9,498] vs. 9,100 [7,170-11,150],p=0.01) than the non-COVID group, although there was no significant difference in the lymphocyte count. Non-COVID-19 pneumonia was associated with a higher d-dimer (962 [427-1,448] vs. 1,704 [868-2,481],p=0.09) and IL-6 (37 [23-10] vs 254 [53- 602],p=0.006) levels. The ferritin level was higher in the COVID-19 group (908 [496- 1,377] vs. 340 [264-785],p=0.008). CONCLUSION: COVID-19 pneumonia in KT recipients shows a different presentation of inflammatory biomarkers than other non-COVID pneumonias. It could be usefully to identify KT patients with COVID-19.More detailed studies are necessary to understand the presentation of biomarkers in KT with COVID-19.

COVID-19 and use of social media in medical education

Introduction: Social media (SM), as technological platforms, allow people and institutions to interact, share content and form communities. Objective: To recognize how teachers of the Faculty of Medicine of the UPB perceive the use of SM under the circumstances imposed by the COVID 19 pandemic. Methods: A qualitative research with an ethnomethodology approach was used;A questionnaire with open questions was applied to 24 teaching participants with more than 3 years of work at the faculty and who, prior to the social isolation imposed by COVID19, made use of SM. The analysis was done by comparing the data. Results: The pandemic favored the generalization of the use of specialized SM in academic communities, the continuity of teaching activities, time savings on travel, increased counseling for students and immediate and permanent access to educational content. In turn, this contingency showed the loss of non-verbal communication and, with regard to medical education, the impossibility of replacing the clinical practice and the interaction between Medical teacher – student-patient. Conclusions: The COVID-19 pandemic brought with it the appropriation by teachers of specialized SM and with this give continuity to the teaching activities;The support of these networks to the educational process was evidenced without considering them as substitutes for face-to-face presence. © 2021 Elsevier España, S.L.U.

Utility of preoperative polymerase chain reaction testing during SARS-CoV-2 pandemic: The challenge of evolving incidence.

INTRODUCTION: Due to its high transmissibility, measures aimed at reducing the spread of SARS CoV2 have become mandatory. Different organizations have recommended performing polymerase chain reaction tests (PCR) as part of the preoperative screening of surgical patients. We aimed to determine the performance of PCR testing to detect asymptomatic carriers. METHODS: Observational study carried out at a tertiary care center. We compared the results of preoperative real-time reverse-transcription-PCR test (RT-PCR) performed on a cohort of patients pending surgery with the results we would have expected assuming the epidemiological data released by government offices. RESULTS: We registered no positives in the 2,722 preoperative RT-PCR tests performed in our health care area between epidemiological Weeks 18 to 21, meaning a cumulative incidence trending to zero. Assuming public epidemiological data, the probabilistic projection of potential asymptomatic individuals ranged from 0.27 × 10e-4 (according to official data of new cases diagnosed by PCR) to 4.69 × 10e-4 if we assumed cases confirmed by IgG test in our province. Assuming a RT-PCR sensitivity of 95%, to obtain a positive result we should perform 38,461 and 2,028 tests respectively. CONCLUSIONS: In scenarios of very low prevalence and despite high sensitivity scores, indiscriminate preoperative RT-PCR screening is of a questionable effectiveness for detecting asymptomatic carriers. Our findings evidence the difficulty of establishing reliable predictive models for the episodic and rapidly evolving incidence of infections such as has characterized the SARS CoV2 pandemic.