Herd immunity and COVID-19

Living with primary immunodeficiency disease during the Covid-19 pandemic

Aim

The purpose of this survey study was to investigate the impact of Covid-19 on the lives of individuals living with primary immunodeficiency disease (PID).

Subject and methods

An online survey was distributed through social media to individuals with a diagnosis of PID to investigate behaviors and concerns during the Covid-19 pandemic.

Results

Five hundred and fifty seven responses were collected, of which 495 surveys were 100% complete; partial responses were analyzed. Respondents have been extremely cautious and have minimized their potential Covid-19 exposure risk. In this study, 56.6% (n = 289) participated in telehealth visits with the physician responsible for managing their PID during the Covid-19 pandemic. Respondents reported they would be somewhat comfortable with returning to normal activities if there was widespread herd immunity (40.9%, n = 209), an effective vaccine (46.0%. n = 235), or public health protections (44.0%, n = 225). The majority of respondents were extremely concerned (57.3%, n = 293) about additional waves of Covid-19 cases when their state or country reopens.

Conclusion

The PID community is aware of the health risks posed by this public health crisis, and have done as much as possible to minimize their risk to community exposure. This pandemic has highlighted the importance of continuous medical care for a vulnerable population through the use of telemedicine. Healthcare providers should be aware of the emotional burden and increased psychiatric distress, often presenting as fear, anxiety, or depression, in patients with a chronic medical condition during a public health crisis such as the Covid-19 pandemic.

Imaging trend and disease course in admitted COVID-19 patients

Objectives:

To describe radiographic imaging findings and disease course in admitted Coronavirus disease 2019 (COVID-19) patients.

Methods:

This retrospective study was carried in the Radiology Department, King Fahad Military Medical Complex, Dhahran between March to August 2020 (6 months). All laboratory confirmed COVID-19 admitted cases were evaluated for their symptoms, duration of hospital stays (in a ward or intensive care unit [ICU]), and imaging findings (ground-glass opacity [GGO], air-space shadowing/consolidation, and others such as atelectasis, reticulation, peribronchovascular thickening, lymphadenopathy and pleural effusion) on chest radiograph (CXR) and computed tomography (CT) studies. Cavitation, nodularity, bronchiectasis, and embolism detected on CT scans were considered as complications. Disease course in terms of recovery (radiographic regression or resolution of findings), worsening (shifting from ward to ICU), and unfavorable outcome (persistent ICU stay or death) were recorded. Imaging findings were interpreted by 2 experienced radiologists and consensus reporting was made. Chi-square test was used to determine association.

Results:

Out of 106 patients, majority were males (n=82, 77.4%). Forty-six patients (43.3%) had abnormal imaging with mostly peripheral GGO (56.5%), followed by consolidations (34.7%), and others (26%). Complications were detected in 6 ICU patients. All patients with unfavorable outcomes were above 60 years having comorbidities or complications (p<0.0005). Fatality rate was calculated as 2.8.

Conclusion:

Coronavirus disease 2019 is seen mostly affecting males, with peripheral opacities as common imaging findings. Elderly patients with co-morbidities may show unfavorable outcomes.

Hyperinflammation and Immune Response Generation in COVID-19

Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19) pandemic has affected millions of people worldwide. The pathophysiology of this virus is not very clearly known, thus, enormous efforts are being made by the scientific community to delineate its evading mechanism. In this review, we have summarized the hyperinflammation and humoral and cell-mediated immune response generated in human body after infection with the SARS-CoV-2 virus. The inflammatory response generated after infection by increased proinflammatory cytokines and chemokines, and complement proteins activation may likely contribute to disease severity. We also discussed the other factors that may affect immunity and could be important comorbidities in the disease severity and outcome.