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Infectious disease outbreaks highlight the importance of trust in public health authorities to avoid fear and improve adherence to recommendations. There is currently no established and validated measure for trust in public health authorities. We aimed to develop and validate an instrument that measures trust in public health authorities and to assess the association between trust in public health authorities and vaccine attitudes. We developed 20 items to measure trust in public health authorities. After implementing a survey in January 2020, we investigated relationships between the items, reduced the number of items, and identified latent constructs of the scale. We assessed variability in trust and how trust was associated with vaccine attitudes, beliefs, and self-reported vaccine acceptance. The pool was reduced to a 14-item trust in public health authorities scale and we found that this trust model was strongly associated with acceptance of vaccines. Our scale can be used to examine the relationship between trust in public health authorities and adherence to public health recommendations. The measure needs to be validated in other settings to determine whether they are associated with other areas where the public question public health authority recommendations.

Immunization is one of the most effective ways to prevent infectious diseases. However, vaccination rates are suboptimal in the United States. Obstetric providers are critical in influencing vaccine decision making among pregnant women, as trust between a patient and provider may facilitate willingness to accept vaccination. Little is known about how power between a patient and provider affects vaccine acceptance. This study explored pregnant women's trust in obstetric providers within the context of vaccines. Using concepts from the relational theory of power, we conducted 40 in-depth interviews with a purposive sample of pregnant women from four Ob-Gyn practices each in Georgia and Colorado. Results suggest that to enhance trust, providers could gain distributive power by conveying empathy. Designated power through medical experience was associated with both trust and distrust, as some women trusted their providers because of their authority and medical credentials, while others viewed authority and experience as reasons to distrust their provider. To increase acceptance, providers should acknowledge the underlying power dynamics within these interpersonal relationships and strengthen rapport with patients through empathy and dialogue.

Adherence to public health recommendations is critical for public safety and well-being. Effective and appropriate communication plays an important role in whether populations trust government and public health authorities, and the extent to which people follow public health recommendations. Poor trust in communication from public health authorities can pose significant challenges for mitigating public health emergencies and maintaining health security. This study aimed to explore the importance of trust in and understanding of communication from public health authorities in improving adherence to public health recommendations, and how that communication can be improved to develop and maintain public trust, particularly in the context of public health emergencies. To understand which factors are important for public trust in communication from public health authorities, we conducted in-depth interviews ( n  = 25) with a racially and demographically diverse group of individuals living in Baltimore. We found that communication source and communication transparency, such as timeliness, completeness, and clarity of information, were critical constructs of trust in communication from public health authorities. We also found that many participants misunderstood the flow of information from public health authorities to news media, and many were unaware that public health authorities provide the most reliable source of health information and recommendations during a public health emergency. To ensure adherence to public health recommendations, the public needs to trust that public health authorities are providing accurate, practical, and prudent recommendations. Drawing on these results, we provide several recommendations for developing and optimizing communication from various public health authorities.

Although routine immunization has contributed to a substantial reduction in mortality from vaccine-preventable diseases globally, vaccine-preventable diseases are attributable for 22% of childhood deaths in Nigeria. Individual and structural level factors that influence vaccination uptake in Nigeria have been well documented. However, there is limited information about the role of interpersonal and community level factors. Frontline workers play a crucial role in delivering life-saving vaccines in Nigeria, as they are tasked with ensuring that all children are vaccinated, within the health system as well as traveling to underserved areas, where health systems are not able to reach. This qualitative study conducted focus groups to examine frontline workers' perceptions of influences affecting caregivers' vaccine-related decision-making. Community- and facility-based frontline workers ( n = 47) identified village and community chiefs, as well as religious leaders as influential within the context of immunization uptake because of their trusted role within communities. Male partners and husbands were identified as also holding an enormous level of influence over childhood vaccination, and the credibility of frontline workers influenced vaccination coverage. Immunization programs should target not only caregivers but also key influencers-such as interpersonal and community sources-to make progress in reaching vaccination coverage goals.