Deployment of Neurosurgeons at the Warfront Against Coronavirus Disease of 2019 (COVID-19)

Asymptomatic SARS-CoV-2 infection: A systematic review and meta-analysis

Quantification of asymptomatic infections is fundamental for effective public health responses to the COVID-19 pandemic. Discrepancies regarding the extent of asymptomaticity have arisen from inconsistent terminology as well as conflation of index and secondary cases which biases toward lower asymptomaticity. We searched PubMed, Embase, Web of Science, and World Health Organization Global Research Database on COVID-19 between January 1, 2020 and April 2, 2021 to identify studies that reported silent infections at the time of testing, whether presymptomatic or asymptomatic. Index cases were removed to minimize representational bias that would result in overestimation of symptomaticity. By analyzing over 350 studies, we estimate that the percentage of infections that never developed clinical symptoms, and thus were truly asymptomatic, was 35.1% (95% CI: 30.7 to 39.9%). At the time of testing, 42.8% (95% prediction interval: 5.2 to 91.1%) of cases exhibited no symptoms, a group comprising both asymptomatic and presymptomatic infections. Asymptomaticity was significantly lower among the elderly, at 19.7% (95% CI: 12.7 to 29.4%) compared with children at 46.7% (95% CI: 32.0 to 62.0%). We also found that cases with comorbidities had significantly lower asymptomaticity compared to cases with no underlying medical conditions. Without proactive policies to detect asymptomatic infections, such as rapid contact tracing, prolonged efforts for pandemic control may be needed even in the presence of vaccination.

Getting Neurosurgery Services Back on Its Feet: "Learning to Live" with COVID-19

Background:

Cancellation/postponement of ”non-emergent” surgeries during coronavirus disease of 2019 (COVID-19) pandemic has created a huge backlog of patients waiting for surgery and has put them at risk of disease progression. We share our institute's policy and our department's attempt to resume ”non-emergent” surgeries.

Materials and Methods:

We collected details of all patients operated under department of neurosurgery since the onset of COVID-19 pandemic in India and categorized them into ”lockdown” and ”unlock” groups for comparison. COVID-19 tests done in these patients were also analyzed. We also compared our surgical volume with the number of COVID-19 cases in the state.

Results:

One hundred and forty-eight patients (97 males, 51 females) with mean age of 37.8 years (range-2 months-82 years) underwent surgery in our department during the study period. The operative volume per week increased by 37% during the ”unlock” period as compared to ”lockdown” period. The proportion of elective/”non-emergent” surgeries increased from 11.3% during ”lockdown” to 34.7% during the ”unlock” period (P = 0.0037). During ”lockdown” period, number of surgeries declined steadily as the number of COVID-19 cases rose in the state (rs(8) = −0.914, P = 0.000). Whereas there was a trend toward increased number of cases done per week despite increase in the number of cases in the state during the “unlock” period. During the ”unlocking” process, in-patient department admissions and surgeries performed per month increased (P = 0.0000) and this increase was uniform across all specialties. COVID-19 test was done (preoperatively or postoperatively) for all surgeries during ”unlock” period compared to 12 (22.6%) surgeries during ”lockdown” period. Three neurosurgery patients who underwent surgery during the ”unlock” period tested positive for COVID-19.

Conclusions:

Our experience shows that proper evidence-based protocols, setting up of adequate COVID-19 testing facilities and provision of ample personal protective equipments are instrumental in re-starting “nonemergent” surgeries.