TRIPS flexibilities have been used to facilitate access to medicines (including vaccines) over the quarter-century since the adoption of the World Trade Organization's Doha Declaration on TRIPS and Public Health. The flexibilities play a vital role in ensuring that new medicines are affordable and are likely to continue to be in a future where geopolitical forces have drastically altered the financing structures of medicines provision in DCs and LDCs.
Dunn et al. (Thu,) studied this question.