scholarly journals Seroprevalence and Dynamics of anti-SARS-CoV-2 antibody among healthcare workers following ChAdOx1 nCoV-19 vaccination

2021 ◽  
Author(s):  
Soma Sarkar ◽  
Shantanab das ◽  
Kabita Choudhury ◽  
Saibal Mukherjee ◽  
Raghunath Chatterjee
Keyword(s):  
Health Care Workers ◽  
Healthcare Workers ◽  
Natural Infection ◽  
Neutralizing Antibody ◽  
Exposed Group ◽  
Detectable Amount ◽  
Significant Drop ◽  
Post Vaccination ◽  
Care Workers ◽  
Regular Contact

Abstract Background The serological evaluations of IgG, IgM, and IgA to the SARS-CoV-2 proteins are widely used for the epidemiological assessment of COVID-19. The Health Care Workers (HCWs) are presumably exposed to a higher risk of acquiring the disease owing to their regular contact with the patients. Methods COVID-19 prevalence was investigated by classifying 313 HCWs into four groups based on their degree of exposure and estimating the IgG and total antibody. The serological assessment of the anti-SARS-CoV-2 antibody was conducted 21 days post-vaccination of first or both doses of the ChAdOx1 nCoV-19 vaccine among 174 HCWs. The vaccinated HCWs were followed up for 3 months for SARS-CoV-2 infection. Findings The levels of anti-SARS-CoV-2 IgG were comparable among different groups, but the seroprevalence gradually decreased from the most exposed to the less exposed group. The neutralizing antibody was positively correlated with IgG as well as total antibody. IgG was marginally decreased after 2 months followed by a significant drop after 4-6 months post-infection. However, 80% of the HCWs developed a detectable amount of IgG after the first dose of vaccination, the median titer of which was comparable to the seropositive HCWs after natural infection. Almost 100% of the HCWs developed antibodies after the second dose of vaccine with boosting effect among the seropositive HCWs. Although ~11.5% of the vaccinated HCWs were infected with the SARS-CoV-2, ~94% of them showed mild symptoms and recovered in home isolation without any O2 support. Interpretations The varying level of seroprevalence among the four groups suggested a stratified spread of the disease. One dose of SARS-CoV-2 vaccination was found to be effective in terms of the antibody titer, while the second dose was required to cover the larger population. The effectiveness of the ChAdOx1 nCoV-19 vaccine was noticeable due to the low rate of post-vaccination infection with moderate or severe symptoms.

scholarly journals Transition of antibody titers after the SARS-CoV-2 mRNA vaccine in Japanese healthcare workers

2021 ◽  
Author(s):  
Masahiro Kitabatake ◽  
Noriko Ouji-Sageshima ◽  
Shota Sonobe ◽  
Ryutaro Furukawa ◽  
Makiko Konda ◽  
...  
Keyword(s):  
Health Care Workers ◽  
Messenger Rna ◽  
Healthcare Workers ◽  
Neutralizing Antibody ◽  
Receptor Binding Domain ◽  
Post Vaccination ◽  
The Third ◽  
Care Workers ◽  
Antibody Titers ◽  
Support Decision Making

AbstractSince February 2021, health care workers in Japan have been preferentially vaccinated with a messenger RNA vaccine (BNT162b2/Pfizer) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). While many studies have confirmed that this vaccine is highly effective in reducing hospitalizations and deaths from coronavirus disease 2019 (COVID-19), antibody titers tend to decline at 3 months, leading to a risk of breakthrough infections. Thus, information is needed to support decision making regarding the third vaccination. In this study, we investigated transition of the anti-SARS-CoV-2 receptor-binding domain (RBD) IgG and neutralizing antibody titers of 41 vaccinated Japanese healthcare workers. Samples were collected seven times starting 1 week before vaccination until 6 months post-vaccination. Anti-SARS-CoV-2 RBD IgG levels peaked at 7 days after the booster, then declined over time and decreased to <10% at 6 months after the booster. Workers with low anti-SARS-CoV-2 RBD IgG levels also had low neutralizing antibody titers. These data support the active use of boosters for healthcare workers, especially for those with low anti-SARS-CoV-2 RBD IgG levels.

scholarly journals Side effects and Immunogenicity following administration of the Sputnik V COVID-19 vaccine in health care workers in Iran

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Farhang Babamahmoodi ◽  
Majid Saeedi ◽  
Reza Alizadeh-Navaei ◽  
Akbar Hedayatizadeh-Omran ◽  
Seyed Abbas Mousavi ◽  
...  
Keyword(s):  
Side Effects ◽  
Health Care Workers ◽  
Healthcare Workers ◽  
Neutralizing Antibody ◽  
Detectable Level ◽  
Common Side Effect ◽  
Independent Evidence ◽  
Randomized Controlled ◽  
Care Workers ◽  
The Mean

AbstractThe Sputnik V is a COVID- 19 vaccine developed by the Gamalia institute of epidemiology and microbiology and released on August 11, 2020. We provided independent evidence on side effects and immunogenicity following the administration of the Sputnik V COVID-19 in Iran. In this observational study, the healthcare workers who were vaccinated with the Sputnik V COVID-19 vaccine within February and April 2021 were evaluated. Among a total of 13,435 vaccinated healthcare workers, we received 3236 self-declaration reports of Sputnik V associated adverse events with the mean age 39.32 ± 10.19 years old which 38.8% were men and 61.2% were women. Totally 68.8% of females versus 66.2% of males reported side effects after receiving the first dose and 31.2% of females versus 33.8% of males reported side effects after the second dose of vaccine. The most common side effect was a pain in the injection site (56.9%), fatigue (50.9%), body pain (43.9%), headache (35.7%), fever (32.9%), joint pain (30.3%), chilling (29.8%) and drowsiness (20.3%). Side effects of the vaccine were significantly more frequent in females and younger individuals. Among a total of 238 participants, more than 90% after the first and second dose of vaccine had a detectable level of SARS-CoV-2 RBD antibody and SARS-CoV-2 neutralizing antibody. Although the overall rate of adverse effects was higher than the interim results from randomized controlled trials, our findings support the manufacturer’s reports about the high humoral immunogenicity of vaccine against COVID-19.

scholarly journals BNT162b2 SARS-CoV-2 Vaccination Elicits High Titers of Neutralizing Antibodies to Both B.1 and P.1 Variants in Previously Infected and Uninfected Subjects

Life ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 896
Author(s):  
Ilaria Vicenti ◽  
Francesca Gatti ◽  
Renzo Scaggiante ◽  
Adele Boccuto ◽  
Daniela Zago ◽  
...  
Keyword(s):  
Health Care ◽  
Health Care Workers ◽  
Neutralizing Antibodies ◽  
Vaccine Dose ◽  
Neutralizing Antibody ◽  
Post Vaccination ◽  
Care Workers ◽  
Antibody Titers ◽  
Cross Neutralization ◽  
Highly Correlated

We aimed to investigate neutralizing antibody titers (NtAbT) to the P.1 and B.1 SARS-CoV-2 variants in a cohort of healthy health care workers (HCW), including 20 previously infected individuals tested at baseline (BLinf, after a median of 298 days from diagnosis) and 21 days after receiving one vaccine dose (D1inf) and 15 uninfected subjects tested 21 days after the second-dose vaccination (D2uninf). All the subjects received BNT162b2 vaccination. D1inf NtAbT increased significantly with respect to BLinf against both B.1 and P.1 variants, with a fold-change significantly higher for P.1. D1inf NtAbT were significantly higher than D2uninf NtAbT, against B.1 and P.1. NtAbT against the two strains were highly correlated. P.1 NtAbT were significantly higher than B.1 NtAbT. This difference was significant for post-vaccination sera in infected and uninfected subjects. A single-dose BNT162b2 vaccination substantially boosted the NtAb response to both variants in the previously infected subjects. NtAb titers to B.1 and P.1 lineages were highly correlated, suggesting substantial cross-neutralization. Higher titers to the P.1 than to the B.1 strain were driven by the post-vaccination titers, highlighting that cross-neutralization can be enhanced by vaccination.

scholarly journals IMPACT OF VACCINATION ON COVID INFECTION IN HEALTH CARE WORKERS IN WESTERN ZONE OF INDIAN RAILWAYS

2021 ◽  
pp. 31-34
Author(s):  
C.S. Anand ◽  
Hafeezunissa Rehman ◽  
K. Krishna Kumar ◽  
Brham Prakash ◽  
Subodh Kumar ◽  
...  
Keyword(s):  
Disease Severity ◽  
Health Care Workers ◽  
Healthcare Workers ◽  
Vaccination Campaign ◽  
Vaccine Dose ◽  
Post Vaccination ◽  
Vaccination Programs ◽  
Source Of Infection ◽  
Care Workers ◽  
Western Zone

Healthcare workers (HCWs) are highly exposed to SARS-CoV-2 infection. HCWs are also likely source of infection of their family members .COVID-19 Vaccination programs started during December 2020 in several countries and prioritized healthcare workers (HCWs).The vaccination campaign coincided with the second surge of COVID cases in Western part of India.This study assess the prevalence of COVID19 infection and disease severity in vaccinated HCWs. Prevalence of SARS-CoV-2 cases was 6.3% of vaccinated HCWs. Most infection cases occurred within two weeks of the first vaccine dose. Out of total HCWs 87.4% were mild, 11.1% were moderate, and 1.5% were severe cases.This study stresses on early identification of asymptomatic carriers in vaccinated individuals.Even vaccinated HCWs might spread the infection leading to hospital outbreaks.With the emergence of newer strains of Covid 19 and amid the rising cases of Delta variant across the globe,adequate infection control practices like masking,social distancing,appropriate PPE and hand sanitization and vaccination are mandatory.However,disease severity is milder post vaccination.It is important to distinguish symptoms of side effects post vaccination from COVID infection even in vaccinated HCW in pandemic.

scholarly journals Comparative analysis of post-vaccination anti-spike IgG antibodies in old Nursing Home Residents and in middle-aged Healthcare workers

2021 ◽  
Author(s):  
Helene Jeulin ◽  
Denis Craus ◽  
Carlos Labat ◽  
Athanase Benetos
Keyword(s):  
Nursing Home ◽  
Health Care Workers ◽  
Healthcare Workers ◽  
Nursing Home Residents ◽  
Igg Antibodies ◽  
Middle Aged ◽  
Post Vaccination ◽  
Care Workers ◽  
History Of ◽  
Few Data

The current consensus is that 2 doses of mRNA vaccines against SARS-CoV-2 are needed for people without COVID-19 history, while for those who had suffered COVID-19, a single dose may be enough to achieve high levels of immunization. This consensus has been based on results obtained in middle-aged populations, whereas only few data exist for the oldest and most frail adults such as nursing home residents (NH-Res) that is, the population most vulnerable to develop severe forms of COVID-19. In this study, we studied the anti-SARS-CoV-2 IgG(S) level of NH-Res and healthcare workers (HCWs) with or without a history of COVID-19 infection taking into account the time since immunization (COVID-19 and/or vaccination). 654 subjects were analyzed: 397 NH-Res (median age 88, IQR 82-93 years, 75% women) and 257 Health Care Workers (HCWs, median 46, IQR 38-54 years, 81% women). NH-Res and HCWs were classified in one of the following 3 groups: No-COVID history and 2 vaccine shots (COV-NO/2VACC); Yes-COVID history and 1 (COV-YES/1VACC) or 2 (COV-YES/2VACC) vaccine injections. The time-related decrease in IgG (S) in subjects without COVID-19 history, SARS-COV-2 serology would be negative in HCWs approximately 220 days and in residents 180 days after vaccination. This time-related decrease was much slower in those with history of COVID. NH-Res belonging into the COV-NO/2VACC and the COV-YES/1VACC groups showed lower IgG (S) levels than the same groups of HCWs (for both groups, p<0.0001), whereas in the group COV-YES/2VACC, IgG (S) levels were similar in NH-Res and HCWs (p=0.88). These results remained unchanged after adjustment for age and duration since immunization. Thus, in NH-Res, 2 vaccine shots were associated with a more pronounced immune response, whereas in HCWs, 1 or 2 vaccine shots in patients with COVID-19 history did make any difference. These results indicate significant differences in mRNA vaccination between NH-Res and middle-aged controls, and could contribute to the specification of vaccine policy in this very old, frail population.

scholarly journals Determinants of early antibody responses to COVID-19 mRNA vaccines in exposed and naive healthcare workers

2021 ◽  
Author(s):  
Gemma Moncunill ◽  
Ruth Aguilar ◽  
Marta Ribes ◽  
Natalia Ortega ◽  
Rocío Rubio ◽  
...  
Keyword(s):  
Health Care Workers ◽  
Healthcare Workers ◽  
Healthy Individuals ◽  
Wild Type ◽  
Post Vaccination ◽  
Neutralization Capacity ◽  
Care Workers ◽  
Neutralizing Capacity ◽  
One Year ◽  
Antibody Levels

Background Two doses of mRNA vaccination have shown >94% efficacy at preventing COVID-19 mostly in naive adults, but it is not clear if the second dose is needed to maximize effectiveness in those previously exposed to SARS-CoV-2 and what other factors affect responsiveness. Methods We measured IgA, IgG and IgM levels against SARS-CoV-2 spike (S) and nucleocapsid (N) antigens from the wild-type and S from the Alpha, Beta and Gamma variants of concern, after BNT162b2 (Pfizer/BioNTech) or mRNA-1273 (Moderna) vaccination in a cohort of health care workers (N=578). Neutralizing capacity and antibody avidity were evaluated. Data were analyzed in relation to COVID-19 history, comorbidities, vaccine doses, brand and adverse events. Findings Vaccination induced robust IgA and IgG levels against all S antigens. Neutralization capacity and S IgA and IgG levels were higher in mRNA-1273 vaccinees, previously SARS-CoV-2 exposed, particularly if symptomatic, and in those experiencing systemic adverse effects. A second dose in pre-exposed did not increase antibody levels. Smoking and comorbidities were associated with lower neutralization and antibody levels. Among fully vaccinated, 6.3% breakthroughs were detected up to 189 days post-vaccination. Among pre-exposed non-vaccinated, 90% were IgG seropositive more than 300 days post-infection. Interpretation Our data support administering a single-dose in pre-exposed healthy individuals. However, heterogeneity of responses suggests that personalized recommendations may be necessary depending on COVID-19 history and life-style. Higher mRNA-1273 immunogenicity would be beneficial for those expected to respond worse to vaccination. Persistence of antibody levels in pre-exposed unvaccinated indicates maintenance of immunity up to one year.

scholarly journals Adherence to personal protective equipment use among healthcare workers caring for confirmed COVID-19 and alleged non-COVID-19 patients

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Meike M. Neuwirth ◽  
Frauke Mattner ◽  
Robin Otchwemah
Keyword(s):  
Health Care ◽  
Health Care Workers ◽  
Personal Protective Equipment ◽  
Healthcare Workers ◽  
University Hospital ◽  
Protective Equipment ◽  
Care Workers

AbstractAdherence observations of health care workers (HCW) revealed deficiencies in the use of recommended personal protective equipment (PPE) among HCW caring in COVID-19 and non-COVID-19 wards during the first period of the SARS-CoV-2 pandemic in a university hospital in Germany. The adherence to wearing surgical face or FFP2-masks and disinfecting hands prior to donning and after doffing the PPE was significantly higher in COVID-19 wards However, there was no total adherence of 100% in COVID-19 wards.

scholarly journals Clinical evaluation of mark induced dermatitis on health care workers during COVID-19 pandemic: a cross sectional study

2021 ◽  
Vol 7 (3) ◽  
pp. 413
Author(s):  
Sushma I. ◽  
Nivin Simon ◽  
A. J. S. Pravin ◽  
M. K. Padmaprasad ◽  
M. Vijayabharathi ◽  
...  
Keyword(s):  
Health Care ◽  
Clinical Evaluation ◽  
Health Care Workers ◽  
Health Care Professionals ◽  
Healthcare Workers ◽  
Skin Diseases ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Care Workers

<p class="abstract"><strong>Background: </strong>Mask induced dermatitis is common among health care workers now because of the obligatory use of facemask for a longer period during COVID-19, the clinical features vary. Very few studies could be conducted due to the COVID induced constraints. Studies regarding reactions to face masks in health workers published to date are limited and hence we decided to do this study. The objective of this study was to find out the clinical presentations of mask induced dermatitis due to long term use of facemask on healthcare workers during COVID-19 pandemic.</p><p class="abstract"><strong>Methods:</strong> A cross sectional study was conducted among 40 healthcare workers attend our OPD with face mask for 6 months. After getting informed written consent clinical evaluation was made by history and dermatologic examination.<strong></strong></p><p class="abstract"><strong>Results:</strong> Total 40 health care professionals between the age group of 21-50 years (17 females and 23 males) came to our OPD with complaints of itching and dryness with signs of erythema, scaling, papules for 6 months duration. Out of them, 15 (37.5%) patients had exacerbation of pre-existing dermatoses like atopic dermatitis, seborrheic dermatitis, chronic urticaria, acne. 10 patients (25%) had irritant contact dermatitis 7 patients (17.5%) had sweat-induced dermatitis, 4 patients (10%) had dermatitis due to sponge strip at the nasal bridge, 4 patients (10%) had dermatitis due to vehement use of ear loop involving retroauricular region.</p><p class="abstract"><strong>Conclusions:</strong> This study showed that wearing face masks results in the development and aggravation of other skin diseases due to various causes. Itch can induce scratching and thus lead to inappropriate use of face masks, which could compromise their function.</p>

scholarly journals Standardised, quantitative neutralisation responses to SARS-CoV-2 Variants of Concern by convalescent anti-sera from first wave infections of UK Health Care Workers and Patients

2021 ◽  
Author(s):  
Diego Cantoni ◽  
Martin Mayora-Neto ◽  
Angalee Nadesalingam ◽  
David A. Wells ◽  
George W. Carnell ◽  
...  
Keyword(s):  
Health Care Workers ◽  
Healthcare Workers ◽  
World Health Organisation ◽  
World Health ◽  
Care Centre ◽  
International Standard ◽  
Care Workers ◽  
The World ◽  
Antibody Titres ◽  
The Uk

One of the defining criteria of Variants of Concern (VOC) is their ability to evade pre-existing immunity, increased transmissibility, morbidity and/or mortality. Here we examine the capacity of convalescent plasma, from a well defined cohort of healthcare workers (HCW) and Patients infected during the first wave from a national critical care centre in the UK, to neutralise B.1.1.298 variant and three VOCs; B.1.1.7, B.1.351 and P.1. Furthermore, to enable lab to lab, country to country comparisons we utilised the World Health Organisation (WHO) International Standard for anti-SARS-CoV-2 Immunoglobulin to report neutralisation findings in International Units. These findings demonstrate a significant reduction in the ability of first wave convalescent plasma to neutralise the VOCs. In addition, Patients and HCWs with more severe COVID-19 were found to have higher antibody titres and to neutralise the VOCs more effectively than individuals with milder symptoms. Widespread use of the WHO International Standard by laboratories in different countries will allow for cross-laboratory comparisons, to benchmark and to establish thresholds of protection against SARS-CoV-2 and levels of immunity in different settings and countries.

Sign in / Sign up

Export Citation Format

Share Document