Monday, November 17, 2014

Tackling vaccine backlash requires more than science


The advent of vaccines has dramatically changed the public health landscape by eliminating the threat of communicable diseases. However, vaccines have come under recent scrutiny with false claims linking vaccines to autism, sterility, etc. Despite the abundance of scientific evidence and benefit-risk ratios to disprove these claims, it has not been enough to quell the distrust of vaccines. Enforcing vaccinations should not involve a “one-click” paternalistic approach; acceptance and trust is a complex act. Confronting any threat of disease presents us with choices of liberty, dignity, and protection. These questions cannot be resolved with more science or data; it requires an encounter with the ethics. Our ethical beliefs underlie personal, political and cultural values in which we base our decisions and perceptions of trust.
Vaccine backlash in the US can been partly attributed to the absence of a serious outbreak in recent history (Larson et al, 2011). When vaccines were first introduced, there was widespread disease and suffering. Today’s lack of familiarity with vaccine-preventable diseases has led to some questioning its purpose. Furthermore, the public is surrounded with a culture of celebrities who are refusing to vaccinate their children, which has spurred a trend among other parents to withhold vaccines as well. Similar to the tobacco ads in the 1950s, foregoing vaccines is seen as glamorous and a symbol of choice among wealthy parents. The concept of a social movement may help change this “culture” around vaccination. Choosing key figures, that are seen as trustworthy and admirable in the community, to advocate for the benefits of vaccination may help counter these harmful portrayals. This “advertising” also drowns out the harmful evidence of refusing vaccination, and raises the question of whether individuals are making decisions with a lack of informed consent, violating the core of ethical guidelines outlined in the Belmont Report. If so, what role does the government play to increase trust?

Implementation of vaccine programs has been characterized by a series of paternalistic nudges, such as mandatory vaccination for school enrollment or providing cost-benefit analyses. However, these government interventions are not fully effective, particularly in a country characterized by personal liberties and freedom of choice. Non-compliance is most importantly exacerbated by the lack of transparency in the government and their contradictory actions (Eliot and Resnick, 2014). In 1999, the AAP and CDC asked vaccine makers to remove thiomersal from childhood vaccines as precaution, but the action only fueled the proposed link between vaccines and autism (Larson et al, 2011). While many studies since then have failed to demonstrate a causal link between the two, the public still remained distrustful. These actions have eroded the trust in government decisions. Promoting transparency could include incorporating scientists from a range of different stakeholder groups on government advisory boards or disclosing financial/non-financial interests (Eliot and Resnick, 2014). Before taking such precautionary measures in moments of scientific uncertainty, these perverse consequences should be taken into account. Research ethics should be fully consulted before allowing such claims to be initially presented.