The chance of COVID-19 infection after vaccination

Author(s):  
Ghazaleh Khalili-Tanha ◽  
Majid Khazaei ◽  
Saman Soleimanpour ◽  
Gordon A Ferns ◽  
Amir Avan

Abstract: The outbreak of COVID-19 that began in Wuhan, China, has constituted a new emerging epidemic that has spread around the world. There are some reports on illustrated the patients getting reinfected after recovering from COVID-19. Here we provide an overview of the biphasic cycle of COVID-19, genetic diversity, immune response and chance of reinfection after recovering from COVID-19. The new generation of COVID-19 is highly contagious and pathogenic infection can lead to acute respiratory distress syndrome. Whilst most patients suffer from a mild form of the disease, there is a rising concern that patients who recover from COVID-19 may be at risk of reinfection. The proportion of the infected population, is increasing worldwide; meanwhile, the rate and concern of reinfection by the recovered population are still high. Moreover, there are a few evidence on the chance of COVID-19 infection even after vaccination, which is around one per cent or less. Although the hypothesis of zero reinfections after vaccination has not been clinically proven, further studies should be performed on the recovered class in clusters to study the progression of the exposed with the re-exposed subpopulations to estimate the possibilities of reinfection and, thereby, advocate the use of these antibodies for vaccine creation.

2009 ◽  
Vol 83 (14) ◽  
pp. 7062-7074 ◽  
Author(s):  
Barry Rockx ◽  
Tracey Baas ◽  
Gregory A. Zornetzer ◽  
Bart Haagmans ◽  
Timothy Sheahan ◽  
...  

ABSTRACT Several respiratory viruses, including influenza virus and severe acute respiratory syndrome coronavirus (SARS-CoV), produce more severe disease in the elderly, yet the molecular mechanisms governing age-related susceptibility remain poorly studied. Advanced age was significantly associated with increased SARS-related deaths, primarily due to the onset of early- and late-stage acute respiratory distress syndrome (ARDS) and pulmonary fibrosis. Infection of aged, but not young, mice with recombinant viruses bearing spike glycoproteins derived from early human or palm civet isolates resulted in death accompanied by pathological changes associated with ARDS. In aged mice, a greater number of differentially expressed genes were observed than in young mice, whose responses were significantly delayed. Differences between lethal and nonlethal virus phenotypes in aged mice could be attributed to differences in host response kinetics rather than virus kinetics. SARS-CoV infection induced a range of interferon, cytokine, and pulmonary wound-healing genes, as well as several genes associated with the onset of ARDS. Mice that died also showed unique transcriptional profiles of immune response, apoptosis, cell cycle control, and stress. Cytokines associated with ARDS were significantly upregulated in animals experiencing lung pathology and lethal disease, while the same animals experienced downregulation of the ACE2 receptor. These data suggest that the magnitude and kinetics of a disproportionately strong host innate immune response contributed to severe respiratory stress and lethality. Although the molecular mechanisms governing ARDS pathophysiology remain unknown in aged animals, these studies reveal a strategy for dissecting the genetic pathways by which SARS-CoV infection induces changes in the host response, leading to death.


2020 ◽  
Author(s):  
Devinder Toor ◽  
Aklank Jain ◽  
Shivani Kalhan ◽  
Harmesh Manocha ◽  
Vivek Kumar Sharma ◽  
...  

Hyper activation of macrophages contributes to acute respiratory distress syndrome, respiratory failure, and subsequent death of COVID-19 cases. Given this, tempering macrophage plasticity is paramount and the highest priority for the management of COVID-19 cases. In this context we here propose that either exchange or in situ re-programming of derailed Th17+ alveolar macrophages/ Slan+ DC with Th1 programmed counterpart would potentially mitigate or abolish pulmonary fibrosis. This approach is also anticipated to afford antiviral immune response and promote recovery in the patients and hold tremendous potential for managing severely infected patients by both curbing viruses and enhancing post-treatment recovery.


2021 ◽  
Vol 20 (3) ◽  
pp. 379-382
Author(s):  
R.V. Aravinda ◽  
◽  
Priyanka Mahendra Tater ◽  
Harsha Huliyappa ◽  
Christy Joseph Manual ◽  
...  

In the midst of the global pandemic of COVID-19 and its significant morbidity and mortality reported across the world due to severe acute respiratory distress syndrome (SARS), it has always been posing a new set of complications each passing day. As we are still in the process of understanding about the complications related to COVID-19, we are encountered with complications related to immunization for COVID-19. We are reporting a case of facial onset Guillain-Barré syndrome (GBS) in the patient who received first dose of COVISHIELD vaccine a couple of weeks prior to the onset of his illness.


2021 ◽  
Vol 58 (2) ◽  
pp. 669-677
Author(s):  
Sarthak Katyal, Dr. Swarupa Chakole

Coronavirus is essentially a respiratory sickness brought about by a newfound rSARS-CoV-2 infection and distinguished in the city of Wuhan, China in December 2019. The emerging outbreak of Covid disease 2019 (COVID-19) brought about because ofthe severe respiratory disorder Covid 2 (SARS-CoV-2) presents a phenomenal test for medical services frameworks around the world.WHO has proclaimed this illness as a pandemic, and cautioned different nations. Like other Covids, this may create respiratory plot contaminations in the patients range from gentle to lethal ailment like pneumonia and ARDS(acute respiratory distress syndrome).The features of coronavirus and the capacity to quickly make far reaching contamination has significant ramifications, justifying vivacious disease avoidance and the preventive measures. While the affirmed quantity of the cases have outperformed 10.3 million throughout the world and keeps on developing, as the possible seriousness related to infection along  with its destructive confusions needs critical advancement of the novel restorative specialists to both forestall and cure the COVID-19 illness . In spite of the fact that antibodies and explicit medication treatments presently can't seem to be found, progressing investigation and subjective preliminaries have led to the examination of viability of the  reused medications for curing COVID-19 illness .According to the current audit, some of the medication competitors have been recommended to cure  COVID-19 will be talked about. While these incorporate enemy of the viral specialists (remdesivir ,rebetol, lopinavir-ritonavir,choloroquine, favipiravir, hydroxychloroquine, umifenovir ,oseltamivir,), immunomodulating based specialists (interferons, plasma bondings , tocilizumab), (azithromycin, corticosteroids),  along with other random specialists. With components of activity and further pharmacology based property which should be investigated, within a specific spotlight on the proof  base wellbeing with viability of a every specialist.


Author(s):  
Youenn Jouan ◽  
Antoine Guillon ◽  
Loïc Gonzalez ◽  
Yonatan Perez ◽  
Stephan Ehrmann ◽  
...  

AbstractCovid-19 can induce lung infection ranging from mild pneumonia to life-threatening acute respiratory distress syndrome (ARDS). Dysregulated host immune response in the lung is a key feature in ARDS pathophysiology. However, cellular actors in Covid-19-driven ARDS are poorly understood. Here, we dynamically analyzed the biology of innate T cells, a heterogeneous class (MAIT, γδT and iNKT cells) of T lymphocytes, presenting potent anti-infective and regulatory functions. Patients presented a compartmentalized lung inflammation paralleled with a limited systemic inflammation. Circulating innate T cells of critically ill Covid-19 patients presented a profound and persistent phenotypic and functional alteration. Highly activated innate T cells were detected in airways of patients suggesting a recruitment to the inflamed site and a potential contribution in the regulation of the local inflammation. Finally, the expression of the CD69 activation marker on blood iNKT and MAIT cells at inclusion was predictive of disease severity. Thus, patients present an altered innate T cell biology that may account for the dysregulated immune response observed in Covid-19-related acute respiratory distress syndrome.


Author(s):  
Ahmad Shamabadi ◽  
Hamidreza Mahmoudi ◽  
Maryam Daneshpazhooh

Rituximab (RTX), as a B cell-depleting agent, is indicated in treating several malignancies and autoimmune diseases. The management of patients currently receiving RTX and patients starting the medication raised concerns in the pandemic era. Theoretically, suppressing the immune response at the beginning of coronavirus disease 2019 (COVID-19) enhances viral replication, but it prevents acute respiratory distress syndrome as the disease progresses. This review aims to investigate the results of RTX administration in patients during the pandemic era. There is insufficient evidence to definitively conclude on the safety of RTX during the pandemic. For this purpose, high-quality controlled cohort studies, as well as registry-based studies, would be helpful.


2020 ◽  
Vol 04 (01) ◽  
pp. 20-24
Author(s):  
Prachee Sathe ◽  
Vijay Sundar Singh

AbstractIn late 2019, China reported cases of respiratory illness in humans, which involved a novel Coronavirus SARS-CoV-2 (also known as 2019-nCoV). The World Health Organization (WHO) termed the disease COVID-19 (i.e., Coronavirus disease 2019). Most of the morbidity and mortality from COVID-19 is largely due to acute viral pneumonitis that leads to acute respiratory distress syndrome (ARDS). This article will discuss the clinical features of the multiorgan involvement in COVID-19 as well as the management of patients who become critically ill due to COVID-19.


2021 ◽  
Vol 0 ◽  
pp. 1-4
Author(s):  
Dawit Kebede Huluka ◽  
Sebrina Ahmed ◽  
Hiwotie Abebe ◽  
Joseph Huang ◽  
David H. Chong ◽  
...  

The COVID-19 pandemic is one of the largest health crises that the world has ever seen, infecting forty million people and killing more than 1 million to date. The disease has imposed a significant demand on health care resources due to the increased number and severely ill patients visiting facilities each day. Since there is no effective cure for COVID-19, supportive management with oxygen, steroids, anticoagulation, and prone positioning remains the major interventions. Prone ventilation is known to have a mortality benefit in intubated patients with acute respiratory distress syndrome (ARDS). However, studies on its role in intubated patients with COVID-19 ARDS (CARDS) are very scarce in resource-limited settings like Africa. We describe two patients with CARDS who were successfully treated with invasive mechanical ventilation, prone ventilation, and standard supportive care.


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