Boards, Advisory Committees, Professional Organizations

  • Member, American Association for Bronchology and Interventional Pulmonology (2020 - Present)
  • Member, American Thoracic Society (2019 - Present)
  • Member, American College of CHEST Physicians (2019 - Present)

Professional Education

  • Board Certification, American Board of Internal Medicine, Pulmonary Medicine (2021)
  • Board Certification, American Board of Internal Medicine, Internal Medicine (2019)
  • Board Certification, American Board of Family Medicine, Family Medicine (2016)
  • Fellowship, Loma Linda University Medical Center, Pulmonary & Critical Care Medicine (2022)
  • Residency, Kaiser Permanente Santa Clara Medical Center, CA, Internal Medicine (2019)
  • Residency, Memorial Hospital of South Bend, IN, Family Medicine (2016)
  • MD, Saint George's University, Grenada, Medicine (2013)
  • BA, The University of Chicago, IL, Chemistry (2007)

Stanford Advisors

All Publications

  • Impact of COVID-19 vaccine-associated side effects on health care worker absenteeism and future booster vaccination. Vaccine Chrissian, A. A., Oyoyo, U. E., Patel, P., Lawrence Beeson, W., Loo, L. K., Tavakoli, S., Dubov, A. 2022


    Short-term side effects related to mRNA vaccines against SARS-CoV-2 are frequent and bothersome, with the potential to disrupt work duties and impact future vaccine decision-making.To identify factors more likely to lead to vaccine-associated work disruption, employee absenteeism, and future vaccine reluctance among healthcare workers (HCWs).Side effects related to COVID vaccination: 1- frequently disrupt HCW duties, 2- result in a significant proportion of HCW absenteeism, 3- contribute to uncertainty about future booster vaccination, 4- vary based on certain demographic, socioeconomic, occupational, and vaccine-related factors.Using an anonymous, voluntary electronic survey, we obtained responses from a large, heterogeneous sample of COVID-19-vaccinated HCWs in two healthcare systems in Southern California. Descriptive statistics and regression models were utilized to evaluate the research questions.Among 2,103 vaccinated HCWs, 579 (27.5%) reported that vaccine-related symptoms disrupted their professional responsibilities, and 380 (18.1%) missed work as a result. Independent predictors for absenteeism included experiencing generalized and work-disruptive symptoms, and receiving the Moderna vaccine [OR = 1.77 (95% CI = 1.33 - 2.36), p < 0.001]. Physicians were less likely to miss work due to side effects (6.7% vs 21.2% for all other HCWs, p < 0.001). Independent predictors of reluctance toward future booster vaccination included lower education level, younger age, having received the Moderna vaccine, and missing work due to vaccine-related symptoms.Symptoms related to mRNA vaccinations against SARS-CoV-2 may frequently disrupt work duties, lead to absenteeism, and impact future vaccine decision-making. This may be more common in Moderna recipients and less likely among physicians. Accordingly, health employers should schedule future booster vaccination cycles to minimize loss of work productivity.

    View details for DOI 10.1016/j.vaccine.2022.04.046

    View details for PubMedID 35465979

    View details for PubMedCentralID PMC9013647

  • Predictors of COVID-19 Vaccine Acceptance and Hesitancy among Healthcare Workers in Southern California: Not Just "Anti" vs. "Pro" Vaccine. Vaccines Dubov, A., Distelberg, B. J., Abdul-Mutakabbir, J. C., Beeson, W. L., Loo, L. K., Montgomery, S. B., Oyoyo, U. E., Patel, P., Peteet, B., Shoptaw, S., Tavakoli, S., Chrissian, A. A. 2021; 9 (12)


    In this study, we evaluated the status of and attitudes toward COVID-19 vaccination of healthcare workers in two major hospital systems (academic and private) in Southern California. Responses were collected via an anonymous and voluntary survey from a total of 2491 participants, including nurses, physicians, other allied health professionals, and administrators. Among the 2491 participants that had been offered the vaccine at the time of the study, 2103 (84%) were vaccinated. The bulk of the participants were middle-aged college-educated White (73%), non-Hispanic women (77%), and nursing was the most represented medical occupation (35%). Political affiliation, education level, and income were shown to be significant factors associated with vaccination status. Our data suggest that the current allocation of healthcare workers into dichotomous groups such as "anti-vaccine vs. pro-vaccine" may be inadequate in accurately tailoring vaccine uptake interventions. We found that healthcare workers that have yet to receive the COVID-19 vaccine likely belong to one of four categories: the misinformed, the undecided, the uninformed, or the unconcerned. This diversity in vaccine hesitancy among healthcare workers highlights the importance of targeted intervention to increase vaccine confidence. Regardless of governmental vaccine mandates, addressing the root causes contributing to vaccine hesitancy continues to be of utmost importance.

    View details for DOI 10.3390/vaccines9121428

    View details for PubMedID 34960171

    View details for PubMedCentralID PMC8706436