Israel put that plan on hold actually. Just one booster is fine for now. It's possible that could change. I'm hoping we'll soon get a variant-specific booster that will provide much stronger and more lasting protection from omicron.

I never understood the preoccupation with the number of shots. Is it the hassle and discomfort of the shot itself?

Personally, it makes me feel like we don't really have a handle on the situation. The vaccine was supposed to be a "virtually 100% effective" silver bullet; now we need constant doses just to maintain some level of protection. It does not inspire confidence.

Is there any other vaccine that needs boosters every 5 months?

Kids have vaccines at 2 months, 6 months, 1 year and 5 years.

Considering that the initial schedule of 2 doses in a month was kinda rushed, and that Israel is not proceeding with a fourth dose because the current wave has been manageable despite the very high number of cases, it seems very unlikely that COVID will need periodic boosters in the general population.

My understanding is that is because they are children, so the doses are much lower.

DTAP, for example, is one of the vaccines that kids need. It has a 5 dose schedule. But, an adult that was never vaccinated can get one shot of Tdap instead.

Notably, the DTAP vaccine is 71% effective after 5 years[1]. Compare to the covid vaccine being 38% after 6 months[2].

[1]https://www.cdc.gov/vaccines/vpd/dtap-tdap-td/hcp/about-vacc...

[2] https://www.cdc.gov/mmwr/volumes/71/wr/mm7104e3.htm?s_cid=mm...

Several vaccines have 3 doses. Flu vaccines get new variants every 6 months.

Every disease is different. Every vaccine is different. What would it prove?