Detection of SARS-CoV-2 IgG antibodies in breast milk and serum of immunized lactating mothers

Abstract Objectives As coronavirus disease 2019 (COVID-19) continuous to spread, the transfer of maternal anti severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies via lactation is an important source of immunity in newborns that requires more comprehensive studies to improve vaccine options in these candidates. The aim of this study was to evaluate SARS-CoV-2 spike protein antibodies against COVID-19 in breast milk and serum of lactating mothers post vaccination and to establish a correlation between both. Methods Hundred and eighty lactating mothers were included in this cross sectional cohort study conducted at Rehman Medical Institute, Peshawar. We described the immunogenicity 21 days after the booster dose of vaccine in 21 patients. Breast Milk and serum specimens were collected and investigated for SARS-CoV-2 spike protein antibodies by consuming electro-chemiluminescence immunoassay (Elecsys Anti-SARS-CoV-2 S Roche, Switzerland). Results One-hundred percent of patients revealed robust positive findings to SARS-CoV-2 spike proteins antibodies in breast milk and 85 percent in serum, i.e., >0.8 IU/mL. Our study shows that lactating mothers can mount robust immune reactions against SARS-CoV-2 post vaccination. Conclusions All participants had significantly higher antibody titers against SARS-CoV-2 after vaccination. Participants had antibody titers one scale higher post vaccination than pre vaccination. A significant correlation was found between SARS-CoV-2 antibodies in milk and serum. Constant monitoring of antibodies titers is estimated to attain significant humoral immunity against SARS-CoV-2 infection.

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Services Provided for Lactating Mothers at Lactation Management Clinic in Selected Tertiary Level Hospitals

Journal of Preventive and Social Medicine ◽

10.3329/jopsom.v38i2.47867 ◽

2020 ◽

Vol 38 (2) ◽

pp. 68-73

Author(s):

Tarannum Tasnim ◽

ANM Shamsul Islam ◽

Mehedi Hasan Azad ◽

Farhana Sharmin

Keyword(s):

Breast Milk ◽

Milk Production ◽

Public Awareness ◽

Cross Sectional Study ◽

Dietary Advice ◽

Tertiary Level ◽

Cross Sectional ◽

Breast Milk Production ◽

Lactating Mothers ◽

Structured Questionnaire

Background: Children are the precious gift from the Almightily Allah and breast milk is an ideal product given to the human being by nature to fulfill all requirements of the offspring until they are matured enough to take adult food. Objective: To assess the services provided for lactating mothers at lactation management centre in selected tertiary level hospitals. Materials and Methods: This cross sectional study was conducted among 100 Lactating mothers who were selected conveniently and were interviewed by pre-tested semi-structured questionnaire and an observational checklist. Collected data were processed and analyzed using SPSS (Statistical Packages for Social Science) software. Results: Lactation management centre (LMC) is supervised by a consultant and separate room is allotted in both out-patient and in-patient departments. Mothers came with lactation problems were more likely in the first month of the baby (73%) and feeling of not enough milk production was common (49%).Highly significant relationship was found between breast problems of lactating mother and age of child (p<0.001). About 84% respondents received practical demonstration on position and attachment of the baby during lactation. About 91% respondents got dietary advice for enough breast milk production, 75% got dietary advice regarding their child’s weaning food chart and69% got health education. Maximum mothers were informed about LMC by doctor & nurse (82%). Conclusion: Information about LMC services should be disseminated across the country. Lactating mothers should be familiarized with LMC and public awareness should be enhanced for effective management of breastfeeding problem to promote, protect and support the breastfeeding. JOPSOM 2019; 38(2): 68-73

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The Effect of Prophylactic HPV Vaccines on Oral and Oropharyngeal HPV Infection—A Systematic Review

Viruses ◽

10.3390/v13071339 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1339

Author(s):

Kristoffer Juul Nielsen ◽

Kathrine Kronberg Jakobsen ◽

Jakob Schmidt Jensen ◽

Christian Grønhøj ◽

Christian Von Buchwald

Keyword(s):

Cohort Study ◽

Oropharyngeal Cancer ◽

Hpv Infection ◽

Case Control ◽

Igg Antibodies ◽

Hpv Vaccines ◽

Case Control Studies ◽

Cross Sectional ◽

Post Vaccination ◽

Cross Sectional Studies

Human papillomavirus (HPV) imposes an increased risk of developing cervical, anal and oropharyngeal cancer. In the Western world, HPV infection is currently the major cause of oropharyngeal cancer. The effectiveness of HPV vaccines for oral or oropharyngeal HPV infection is yet to be determined. This study conducted a systematic literature search in Pubmed and Embase. Studies investigating the impact of HPV vaccines on oral or oropharyngeal HPV infection were enrolled. This review reports the relative prevention percentage (RPP), including a risk of bias assessment as well as a quality assessment study. Nine studies were included (48,777 participants): five cross-sectional studies; one randomized community trial study (RCT); one longitudinal cohort study; and two case-control studies. A significant mean RPP of 83.9% (66.6–97.8%) was calculated from the cross-sectional studies, 82.4% in the included RCT and 83% in the longitudinal cohort study. Further, two case-control studies that measured antibody response in participants immunized with HPV vaccines were included. Respectively, 100% and 93.2% of participants developed HPV-16 Immunoglobulin G (IgG) antibodies in oral fluids post-vaccination. Analysis of the studies identified a significant decrease in vaccine-type oral or oropharyngeal HPV infections in study participants immunized with HPV vaccines across study designs and heterogenous populations. Further, a significant percentage of participants developed IgG antibodies in oral fluid post-vaccination.

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Hepatitis B antibody titers in Indonesian adolescents who received the primary hepatitis B vaccine during infancy

Paediatrica Indonesiana ◽

10.14238/pi53.3.2013.160-6 ◽

2013 ◽

Vol 53 (3) ◽

pp. 160

Author(s):

Hartono Gunardi ◽

Adra Firmansyah ◽

Sri Rezeki S Harun ◽

Sudigdo Sastroasmoro

Keyword(s):

Hepatitis B ◽

Booster Dose ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Blood Tests ◽

Vaccination History ◽

Antibody Titers ◽

Hb Vaccine ◽

Over Time

Backgi-ound Hepatitis B (HB) has been classified as moderate-tohighlyendemic in Indonesia. HB vaccination, the most effectivemethod to prevent HB viral transmission, induces protectiveantibodies against HB surface antigen (anti-HBs). However, theseantibodies decline in titer over time. Studies on the duration ofprotection and the prevalence of n on-responders in Indonesianadolescents have been limited.Objectives To determine anti-HBs titers in 15-17-year oldIndonesian adolescents given primary HB vaccine during infancyand the prevalence of non-responders after a HB vaccine boosterdosage.Methods This cross-sectional study was performed from Februaryto September 2008 on adolescents aged 15-17 years in threesenior high schools in Jakarta who received complete primary HBvaccines during infancy, based on parents' recall. Investigationsincluded HB vaccination history, anthropometric measurements,and blood tests for anti-HBs before and 4-6 weeks after a boosterdose ofHB vaccine.Results Of 94 subjects, 35 had protective anti-HBs and 59 hadundetectable anti-HBs. A booster dose was administered to 5 8 of then on-protected subjects, of which 33 showed anamnestic responses.However, 25 subjects failed to generate protective anti-HBs. Takinginto consideration the adolescents with protective anti-HBs beforeand after the booster dose, serologic protection was demonstratedin 73%. Non-responder prevalence was 27%. The high prevalenceof non-responders may indicate bias of parents' recall.Conclusion Protective anti-HBs is detected in less than half ofIndonesian adolescents given primary HB vaccine during infancy.Following booster dosage, anamnestic responses are n oted in onethirdof subjects. The prevalence of non-responders is 27%, butconfirmation with further study is needed.

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SARS-CoV-2 Post Vaccinated Adverse Effects and Efficacy in the Egyptian Population

Vaccines ◽

10.3390/vaccines10010018 ◽

2021 ◽

Vol 10 (1) ◽

pp. 18

Author(s):

Marwa O. Elgendy ◽

Ahmed O. El-Gendy ◽

Abdulaziz Ibrahim Alzarea ◽

Sarah Mahmoud ◽

Saad S. Alqahtani ◽

...

Keyword(s):

Adverse Effects ◽

Laboratory Tests ◽

Dose Interval ◽

Vaccine Safety ◽

Spike Protein ◽

Post Vaccination ◽

The Third ◽

Antibody Titers ◽

Administration Methods ◽

Structured Questionnaire

Vaccines are the solution to overcome SARS-CoV-2. This study aimed to determine the post-Sinopharm vaccine safety-profile and immunity through antibody titers. Data were collected using a structured questionnaire from Egyptian participants who received two doses of Sinopharm vaccine. Data were divided into three parts, the first and second parts were to detect participants’ post-first and second dose symptoms and practices, and the third for the results of IgG anti spike protein antibodies test and laboratory tests. Pain, redness, swelling at the injection site, headache, fatigue, and lethargy were the most common post-vaccine symptoms for both first and second doses. Most of the participants felt mild or no symptoms after vaccination. The symptoms started mostly during the first day post-vaccination and lasted for no more than two days. Forty-nine percent of the participants resulted in positive antibodies tests on day 18 post-vaccination. The average antibody level for vaccinated participants with past SARS-CoV-2 infection was much higher than that for non-past infected participants. These vaccines’ administration methods need to be reevaluated by changing the dose, dose interval, adding a third dose, or mixing it with other vaccines with different techniques to improve their protection rates. Further studies are required to validate this finding.

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Correlation Between Docosahexaenoic Acid Intake and It’s Content in Breast Milk of Lactating Mothers in Jakarta

World Nutrition Journal ◽

10.25220/wnj.v03.i2.0006 ◽

2020 ◽

Vol 3 (2) ◽

pp. 45

Author(s):

Raphael Kosasih ◽

Ninik Mudjihartini ◽

Saptawati Bardosono

Keyword(s):

Breast Milk ◽

Docosahexaenoic Acid ◽

Cross Sectional Study ◽

Health Centers ◽

Cross Sectional ◽

Positive Correlation ◽

Food And Agriculture ◽

Food And Agriculture Organization ◽

Lactating Mothers ◽

Moderate Positive Correlation

Objective: Docosahexaenoic acid (DHA) is the predominant structural fatty acid in the brain and crucial for cognitive development in early life. Newborn DHA intake completely depends on preformed DHA in mother’s breast milk. In advancing years, globalization has been declining the fish intake of Asian countries. This study aims to determine DHA intake among lactating mothers in Jakarta and its association with breast milk’s DHA.Method: This cross-sectional study was conducted in Grogol Petamburan and Cilincing Public Health Centers, Jakarta. Eighty healthy lactating mothers aged 20–35 years old in 1–6 months postpartum were taken using consecutive sampling method. Characteristics data were taken by interviews and DHA intake was assessed with the semiquantitative food frequency questionnaire. Breast milk specimens were collected in the morning and its DHA content was analyzed using Gas Chromatography with Mass Spectrometry. Descriptive analyses and Spearman rho test were used with a 95% confidence level.Result: This study showed the median of subjects’ DHA intake was 158.5(13.9–719.7) mg/day, i.e., 67.5% of the subjects was below Food and Agriculture Organization (FAO) recommendation. The median of breast milk DHA was 51.7(19–184.7) mg/day, only 42.5 % of the subjects had breast milk DHA to meet the minimal requirement of their infant. A moderate positive correlation was found between maternal DHA intake with breast milk DHA (r = 0.478, p < 0.001). Conclusion: Maternal DHA intake has moderate positive correlation with breast milk DHA, more than half of the subject had DHA intake below FAO recommendation.

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Estimating SARS-CoV-2 Spike Antibody Levels Among Sputnik V First Dose Vaccinated People in Pakistan: Formulation of Anti-COVID-19 National Mass Vaccination Strategy.

10.21203/rs.3.rs-502338/v1 ◽

2021 ◽

Author(s):

Umar Saeed ◽

Sara Rizwan Uppal ◽

Zahra Zahid Piracha ◽

Aftab Ahmad Khan ◽

Azhar Rasheed ◽

...

Keyword(s):

Antibody Titer ◽

Previous History ◽

Vaccination Strategy ◽

Cross Sectional Study ◽

Mass Vaccination ◽

Spike Protein ◽

Cross Sectional ◽

Diagnostic Center ◽

Antibody Titers ◽

Antibody Levels

Abstract Rapid ramp up of immune responses against SARS-CoV-2 during pandemic enables adequate prevention and treatment for COVID-19. Estimating levels of SARS-CoV-2 spike protein antibodies post vaccination is crucial for designing mass-vaccination strategies. The aim of this study was to evaluate effectiveness of Sputnik V first dose in Pakistan. A cross-sectional study of 2000 participants was conducted for examining Gam-COVID-Vac or Sputnik V first dose effects at 21st days post administration at Islamabad Diagnostic Center, Islamabad, Pakistan. From 100 real-time PCR negative (SARS-CoV-2 RNA) individuals, samples were collected and analyzed for antibodies to the SARS-CoV-2 spike protein using Electro-chemiluminescence immunoassay (ECLIA) (Elecsys # 09289267190 Roche, USA). 85% of the participants showed strong positive results with SARS-CoV-2 spike protein antibodies >1.5 AU/ml. The individuals with antibody titer >250 AU/ml were 34.9%. Among those with antibody levels >250 AU/ml 52% had previous history of COVID-19 infection. While participants with >100 AU/ml of antibodies were 12.7%. However 9.5% showed antibody titer of >25 AU/ml. 27% of participants had antibody titers of >1.5-2.5 AU/ml. While antibody titers of <1.5 AU/ml were observed among 15.9% of participants. Majority of the individuals represented significantly high antibody titers against SARS-CoV-2 even before second booster dose of Ad5 based Sputnik V vaccine. Continuous monitoring of antibody levels among COVID-19 vaccinated populations are deemed to assess humoral immunity status against SARS-CoV-2 infections.

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Correlation Between Docosahexaenoic Acid Intake and It’s Content in Breast Milk of Lactating Mothers in Jakarta

World Nutrition Journal ◽

10.25220/wnj.v03.i1.0005 ◽

2019 ◽

Vol 3 (1) ◽

pp. 24

Author(s):

Raphael Kosasih ◽

Ninik Ninik Mudjihartini ◽

Saptawati Bardosono

Keyword(s):

Breast Milk ◽

Docosahexaenoic Acid ◽

Early Life ◽

Energy Requirement ◽

Health Centre ◽

Moderate Correlation ◽

Omega 3 ◽

Cross Sectional ◽

Public Health Centre ◽

Lactating Mothers

Objective: Docosahexaenoic acid (DHA) is the predominant structural fatty acid in the brain and one of the most important nutrient for cognitive development in early life. During early life, there is very limited metabolic capability to convert omega-3 fatty acids to DHA. Therefore, newborn intake of DHA completely depends on preformed DHA in mother’s breast milk. This study aims to determine DHA intake among lactating mothers and their association with breast milk’s DHA.Method: This cross-sectional study was conducted in Grogol Petamburan and Cilincing Public Health Centre in Jakarta. Eighty healthy lactating mothers aged 20–35 years old in 1–6 months postpartum was taken using consecutive sampling method. Mother’s DHA intake was assessed with a semiquantitative food frequency questionnaire. Post-feed breast milk specimens were collected in the morning, transported with cool boxes, and stored in the laboratory at -70° C before the analyses. Breast milk DHA content was analysed using Gas Chromatography with Mass Spectrometry. Descriptive analyses and Spearman rho test was used with a 95% confidence level.Result: This study showed the median of subjects’ DHA intake was 158.5(13.9–719.7) mg/day, i.e. 67.5% of the subjects was below Food and Agriculture Organization (FAO) recommendation (200 mg/day). The median of breast milk DHA was 51.7(19–184.7) mg/day, only 42.5 % of the subjects had breast milk DHA to meet the minimal requirement of their infant based on FAO recommendation (0.1% of total energy requirement). There was a moderate correlation between subject DHA intake with breast milk’s DHA content (r = 0.478, p < 0.001). Conclusion: More than half of the subjects had DHA intake below FAO recommendation. Our finding showed a positive moderate correlation between DHA intake and breast milk DHA among lactating mothers.

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Seroprevalence of SARS-CoV-2 IgG antibodies, in Corsica (France), April and June 2020.

10.1101/2020.09.29.20201368 ◽

2020 ◽

Cited By ~ 1

Author(s):

Lisandru Capai ◽

Nazli Ayhan ◽

Shirley Masse ◽

Jean Canarelli ◽

Stephane Priet ◽

...

Keyword(s):

Neutralization Test ◽

Age Groups ◽

Neutralizing Antibody ◽

Blood Analysis ◽

Spike Protein ◽

P Value ◽

Igg Antibodies ◽

Antibody Titers ◽

The Impact ◽

Sera Samples

Our aim was to assess the seroprevalence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection after the lockdown in a sample of the Corsican population. Between 16th April and 15th June 2020, 2,312 residual sera were collected from patients having carried out a blood analysis in one of the participating laboratories. Residual sera obtained from persons of all ages were tested for the presence of anti-SARS-CoV-2 IgG using the EUROIMMUN enzyme immunoassay kit for semiquantitative detection of IgG antibodies against S1 domain of viral spike protein (ELISA-S). Borderline and positive samples in ELISA-S were also tested with an in-house virus neutralization test (VNT). Prevalence values were adjusted for sex and age. A total of 1,973 residual sera samples were included in the study. The overall seroprevalence based on ELISA-S was 5.27% [95% confidence interval (CI) 4.33-6.35] and 5.46% [4.51-6.57] after adjustment. Gender was not associated with IgG detection. However, significant differences were observed between age groups (p-value = 1 E-5) and particularly for people being younger than 50 years of age (Odd ratio (OR) = 2.86 95% CI [1.80- 4.53]; p-value <0.000001*). The prevalence of neutralizing antibody titers ≥40 was of 3% [2.28-3.84]. In conclusion the present study showed that a low seroprevalence for COVID-19 in Corsica in accordance with values reported for other French regions in which the impact of the pandemic was low.

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Induction of SARS-Cov-2-Specific IgG and IgA in Serum and Milk with Different SARS-CoV-2 Vaccines in Breastfeeding Women: A Cross-Sectional Study in Northern Spain

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18168831 ◽

2021 ◽

Vol 18 (16) ◽

pp. 8831

Author(s):

Carolina Lechosa-Muñiz ◽

María Paz-Zulueta ◽

Jose Manuel Mendez-Legaza ◽

Juan Irure-Ventura ◽

Rocío Cuesta González ◽

...

Keyword(s):

Breast Milk ◽

Adverse Reactions ◽

Protein S ◽

Vaccine Safety ◽

Cross Sectional Study ◽

Igg Antibodies ◽

Northern Spain ◽

Cross Sectional ◽

Mean Values ◽

Specific Igg

Breastfeeding mothers were excluded from the clinical trials conducted for vaccines against SARS-COV2. Since the start of the vaccination, some doubts have arisen regarding its compatibility with breastfeeding. The aim of this study was to analyse the presence of anti-SARS-CoV-2 antibodies in breast milk and serum (IgG and IgA) of vaccinated breastfeeding women. The main variables of the observational study were: adverse related events after vaccination and determination of the presence of IgG and IgA isotypes antibodies in serum and in breast milk of vaccinated women against the SARS-CoV-2 antigens. Results: 110 breastfeeding mothers were included; 70 women (63.6%) were vaccinated with two doses of BNT162b2, 20 women (18.2%) with two doses of mRNA-1273, and 20 women (18.2%) with a single dose of ChAdOx1-S. Regarding adverse reactions and vaccine safety, 38 women had no adverse reactions; 20 (18.2%) had general malaise or adenopathies; 10 (9.1%) had a headache; and 7 (6.4%) had fever. When analysing IgG antibodies, significantly higher levels of antibodies were found in serum and breast milk from mothers vaccinated with BNT162b2 or mRNA-1273 vs. ChAdOx1-S (p < 0.001 and p = 0.001, respectively). Analysing IgA antibodies, significant differences were found when comparing mean values in serum from mothers vaccinated with BNT162b2 or mRNA-1273 vs. ChAdOx1-S (0.12, 0.16, and 0.02, respectively; p < 0.001) and breast milk of mothers vaccinated when comparing BNT16b2 vs. ChAdOx1-S. All vaccinated breastfeeding mothers had serum anti-S1 IgG antibodies in response to vaccination against SARS-CoV-2, regardless of the commercial vaccine administered. Conclusions: the anti-SARS-CoV-2 vaccines were well tolerated by the mothers and the breastfed infant. In addition, breastfeeding mothers offer their infants IgA and IgG isotype antibodies directed against SARS-CoV-2 protein S in breast milk.

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A cross-sectional study of lactation room quality and Dutch working mothers’ satisfaction, perceived ease of, and perceived support for breast milk expression at work

International Breastfeeding Journal ◽

10.1186/s13006-021-00415-y ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Sjoukje A. van Dellen ◽

Barbara Wisse ◽

Mark P. Mobach ◽

Casper J. Albers ◽

Arie Dijkstra

Keyword(s):

Breast Milk ◽

Working Mothers ◽

Cross Sectional Study ◽

Perceived Support ◽

Cross Sectional Survey ◽

High Quality ◽

Cross Sectional ◽

Breast Milk Expression ◽

Lactating Mothers

Abstract Background The challenge of combining professional work and breastfeeding is a key reason why women choose not to breastfeed or to stop breastfeeding early. We posited that having access to a high-quality lactation room at the workplace could influence working mothers’ satisfaction and perceptions related to expressing breast milk at work, which could have important longer term consequences for the duration of breastfeeding. Specifically, we aimed to (1) develop a checklist for assessing the quality of lactation rooms and (2) explore how lactation room quality affects lactating mothers’ satisfaction and perceptions. Drawing on social ecological insights, we hypothesized that the quality of lactation rooms (operationalized as any space used for expressing milk at work) would be positively related to mothers’ satisfaction with the room, perceived ease of, and perceived support for milk expression at work. Methods We conducted two studies. In Study 1 we developed a lactation room quality checklist (LRQC) and assessed its reliability twice, using samples of 33 lactation rooms (Study 1a) and 31 lactation rooms (Study 1b). Data were collected in the Northern part of the Netherlands (between December 2016 and April 2017). Study 2 comprised a cross-sectional survey of 511 lactating mothers, working in a variety of Dutch organizations. The mothers were recruited through the Facebook page of a popular Dutch breastfeeding website. They completed online questionnaires containing the LRQC and measures aimed at assessing their satisfaction and perceptions related to milk expression at work (in June and July 2017). Results The LRQC was deemed reliable and easy to apply in practice. As predicted, we found that objectively assessed higher-quality lactation rooms were associated with increased levels of satisfaction with the lactation rooms, perceived ease of milk expression at work, and perceived support from supervisors and co-workers for expressing milk in the workplace. Conclusions The availability of a high-quality lactation room could influence mothers’ decisions regarding breast milk expression at work and the commencement and/or continuation of breastfeeding. Future studies should explore whether and how lactation room quality affects breastfeeding choices, and which aspects are most important to include in lactation rooms.

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