Effectiveness against hospitalisation of over 90% is also observed with the Delta variant with all 3 vaccines (3). In most groups there is relatively limited waning of protection against hospitalisation over a period of at least 5 months after the second dose.
High levels of protection (over 90%) are also seen against mortality with all 3 vaccines and against both the Alpha and Delta variants (7, 11, 3). Relatively limited waning of protection against mortality is seen over a period of at least 5 months.
