CDC MMWR report released on January 19, 2022 showing in their graph of the Delta wave (May-Nov 2021) data that the unvaccinated who have had previous SARS-CoV-2 infection have a lower risk of hospitalisation as does the vaccinated population. In support of natural immunity. [1, 2, 3]
On same day the WHO’s IHR Emergency Committee put out a statement regarding the COVID-19 pandemic.
“While current vaccines continue to be effective in reducing risk of severe disease and death due to COVID-19, they do not completely eliminate the risk of transmission of SARS-CoV-2 (all variants)…
Given the inability of the vaccines to stop transmission the committee stated a need to increase vaccine uptake in countries with only 10% coverage but also “stressed the importance of coordinating research on heterologous vaccine combinations” and “vaccines that confer broader immunity across variants.” plus “the importance of expediting research and development on novel vaccine technologies…such as intranasal vaccines.”
Point 7: Given the limited and uneven distribution of COVID-19 vaccines globally, proof of COVID-19 vaccination will no longer be required as the only way or condition for allowing international travel.