Even further back in 2014, he led the KCDA in opposing the Kenyan government's rollout of a tetanus vaccine that specifically targeted the female population, suggesting that the underlying motive was a secret sterilisation campaign, despite local health authorities, WHO and Unicef all reassuring it was safe.
The Kenya Conference of Catholic Bishops spokesperson, Father Ferdinand Lugonzo, has said that
Karanja and the KCDA do not reflect the views of the church, stating their job "is to speak on matters of morality and faith. The mandate of the doctors is to speak on their understanding of their scientific practice. We are not at variance."
