Exploring willingness to participate in future Human Infection Studies in Lusaka, Zambia: A nested qualitative exploratory study release_uw2qejtz6jhkldjhtcbjey2qbe

by Evelyn Kunda-Ng'andu, Masuzyo Chirwa, Chanda Mwamba, Michelo Simuyandi, Jenala Chipungu, Esnart Ngandu, Hope Mwanyungwi, Roma Chilengi, Anjali Sharma

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2020  

Abstract

<title>Abstract</title> Background: Human Infection Studies (HIS) involve intentional infection of volunteers with a challenge agent or pathogen in controlled conditions with the aim of developing vaccines. Though sub-Saharan Africa carries the highest burden of vaccine-preventable diseases, the region is only now being primed to conduct HIS relevant to its population. Given the imminent introduction of HIS in Zambia, we sought to understand potential participants' willingness to volunteer for such studies. Methods : We used a qualitative exploratory approach to understand potential participants' perceptions on HIS participation using the example of typhoid. Healthy adults, recruited using random selection from higher learning institutions in Lusaka, participated in 15 in-depth interviews (IDIs) while others were purposefully included in five focus group discussions (FGDs). Results : Participants considered typhoid a serious disease with potential for life-long consequences and death. After sharing audio visual materials introducing the concepts of HIS, some participants expressed unrestricted willingness to participate, others said that they needed to consult parents and professors, and some expressed fear of death and illness. Though willing to be quarantined for up to six months, participants expressed concerns regarding separation from family and duties, having insufficient information to decide, inadequate access to care, severe disease, life-long injury or side-effects, death, and vaccine failure. These concerns along with possibility of underlying conditions that compromise individual immunity, competing priorities, parental refusal, and distrust of study or vaccine efficacy could lead to refusal to participate. Reasons for willingness to participate included monetary compensation, altruism and being part of a team that comes up with a vaccine. Conclusions: Though afraid of deliberate typhoid infection, potential participants are willing to participate if given adequate information, time to consult trusted persons, compensation and assurance of adequate care.
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