Background The human papillomavirus (HPV) vaccine is a major advancement in cancer prevention and this primary prevention tool has the potential to reduce and eliminate HPV-associated cancers; however, the safety and efficacy of vaccines in general and the HPV vaccine specifically have come under attack, particularly through the spread of misinformation on social media. The popular social media platform Instagram represents a significant source of exposure to health (mis)information; 1 in 3 US adults use Instagram. Objective The objective of this analysis was to characterize pro- and anti-HPV vaccine networks on Instagram, and to describe misinformation within the anti-HPV vaccine network. Methods From April 2018 to December 2018, we collected publicly available English-language Instagram posts containing hashtags #HPV, #HPVVaccine, or #Gardasil using Netlytic software (n=16,607). We randomly selected 10% of the sample and content analyzed relevant posts (n=580) for text, image, and social media features as well as holistic attributes (eg, sentiments, personal stories). Among antivaccine posts, we organized elements of misinformation within four broad dimensions: 1) misinformation theoretical domains, 2) vaccine debate topics, 3) evidence base, and 4) health beliefs. We conducted univariate, bivariate, and network analyses on the subsample of posts to quantify the role and position of individual posts in the network. Results Compared to provaccine posts (324/580, 55.9%), antivaccine posts (256/580, 44.1%) were more likely to originate from individuals (64.1% antivaccine vs 25.0% provaccine; P<.001) and include personal narratives (37.1% vs 25.6%; P=.003). In the antivaccine network, core misinformation characteristics included mentioning #Gardasil, purporting to reveal a lie (ie, concealment), conspiracy theories, unsubstantiated claims, and risk of vaccine injury. Information/resource posts clustered around misinformation domains including falsification, nanopublications, and vaccine-preventable disease, whereas personal narrative posts clustered around different domains of misinformation, including concealment, injury, and conspiracy theories. The most liked post (6634 likes) in our full subsample was a positive personal narrative post, created by a non-health individual; the most liked post (5604 likes) in our antivaccine subsample was an informational post created by a health individual. Conclusions Identifying characteristics of misinformation related to HPV vaccine on social media will inform targeted interventions (eg, network opinion leaders) and help sow corrective information and stories tailored to different falsehoods.

Voluntary counseling and testing (VCT) has been recognized as the crux of HIV surveillance, prevention and treatment programs. Since 2000, Ghana government has launched a number of HIV prevention and treatment programs intended to increase VCT services. Despite these efforts, uptake of testing is still low, though many women reported interest in getting tested. The disconnect between intention and action is attributable to several factors, including HIV-related stigma. The study used data from the 2003 Ghana Demographic and Health Survey and fitted complementary log-log models to regress women's desire for and uptake of an HIV test on levels of personal and community stigma. Consistent with findings from previous research, the study revealed significant associations between a number of socio-demographic and socio-cognitive variables and the desire for and uptake of an HIV test by Ghanaian women. Most significantly, the study showed that widespread stigma in the community exert greater negative effects on individuals who endorse stigmatizing beliefs and predispositions, compared to their peers with more favorable attitudes. Since community level educational and risk reduction programs have demonstrable influences on reducing HIV stigma, it is imperative that the Ghana government's ongoing anti-stigma campaigns and other HIV prevention programs take cognizance of the role of community stigma in influencing HIV testing.

The goals of the United States' National HIV/AIDS Strategy are reducing HIV infections, increasing linkage to care, and reducing health disparities. To accomplish these, it is imperative to have accurate data about HIV prevalence, especially in high-burden populations, including immigrants, ethnic/racial minorities and other minority populations. However, recent increases in HIV prevalence among Black migrants from sub-Saharan Africa has drawn attention to the need to examine the epidemiological diversity of the Black population, and accurately account for HIV prevalence within it. In most HIV surveillance data, a single category, Black/African American, is used to combine data for U.S.-born and foreign-born Blacks, including migrants from sub-Saharan Africa. Such categorizations result in under-estimation of HIV prevalence in the African immigrant population, making it difficult to allocate resources appropriately for HIV prevention and treatment. This paper highlights and provides recommendations regarding the importance of disaggregating HIV surveillance data on Blacks by country of birth.

Recent advances in the fight against HIV have increased the life expectancy of those infected. Despite these, a number of barriers such as stigma continue to affect HIV prevention and treatment. Although the body of work on HIV stigma is growing, there is a paucity of literature on the experiences of specific sub-groups such as African immigrants living with HIV. Drawing on in-depth interviews with a sample of these immigrants in the US, this study examines their experiences of HIV-related stigma, its impact on their lives, and the means of coping and resistance they adopted. Like other persons living with HIV, study participants experienced interpersonal, internalized and institutional stigma. However, their experiences of, and responses to stigmatization are shaped largely by cultural/religious assumptions and perceptions about HIV learnt from their countries of origin and western media's construction of HIV. The study concludes with broader implications for further conceptualization of stigma.

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