[TexasGator]

From their source:

Effectiveness against hospitalisation of over 90% is also observed with the Delta variant with all 3 vaccines (Figure 2, 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. Greater waning appears to occur among those in clinical risk groups (Figure 2, 3).

[Steve_Seattle]

"In most groups there is relatively limited waning of protection against hospitalization over a period of at least 5 months after the second dose."

Then why the rush for boosters for EVERYONE after seven months if there is only minimal reduced efficacy after AT LEAST five months? Why are high-vax countries seeing the same Covid spikes that low-vax countries have experienced? Singapore has one of the highest vax rates in the world (90%) and has seen their biggest Covid spike ever in the last two months.