“…This was often explained by study participants as a perception that these new vaccines were developed too quickly [80,100], resulting in insufficient testing and evidence [31,80,85,86,93,94,98,100,102] and information about long term adverse reactions [82,83,93,95,96]. Studies reported that concerns about inadequate testing also resulted in perceptions of low vaccine effectiveness [32,79,81,86,89,96,98].…”