I've heard there's an Indian variant that affects vaccinated people in the UK; it's not as clear cut though, this article seems a bit uncertain about it atm: https://news.sky.com/story/is-the-indian-covid-variant-more-...
https://www.hindustantimes.com/india-news/icmr-says-covaxin-...
https://timesofindia.indiatimes.com/india/covaxin-shows-78-o...
According to this Twitter person: https://twitter.com/sailorrooscout/status/138482553989517312...
>Covaxin is the inactivated virus-based COVID-19 vaccine being developed with Bharat Biotech and Covishield is the Oxford-AstraZeneca vaccine being manufactured locally by the Serum Institute of India under that name.
>So inactivated vaccines tend to have lower immunogenicity on average (when we look back on past vaccines). I would like to think if Covaxin neutralizes it, the others would likely do so as well. We will definitely need data but this is very promising