infrastructure or lack frof in countries like rwanda and lie beer d liberia. you need infrastructure when it comes to the pfizer vaccines. it s a two dose regimen. you need special syringes. is the infrastructure there to support it? yes, so we ve known for a long time the requirements for some of the vaccines. and the countries have been aware of those requirements and are taking great strides to provide some of the infrastructure including the ultra cold temperature freezers and working on the distribution networks. so it s really less so about the capacity to manage the doses but it s more about getting the doses available to those countries. steph, so as this is all happening, you got a cdc advisory committee in an hour into a two-day meeting on booster shots. explain what they re considering
vaccines for boosters and that answer is probably yes. with you don t have data on that yet. we re expecting some data to come out in the next two to three weeks. but the fact of the matter is that answer is probably yes. and we want to hear more data absolutely on this johnson & johnson vaccine as welcome. a single dose had a 72% efficacy against symptomatic infection which is actually more potent than a single dose of moderna or pfizer. and so that is one of the reasons that they went forward with a single dose regimen as opposed to a two-dose regimen. what we would like to see is that data coming forward. i think we re going to find that the regimen of these vaccines, not boosters, is a three dose for moderna and pfizer and two dose for johnson & johnson. similar to our hepatitis vaccines. and doctor, we understand that as part of president biden s speech he s going to talk about vaccine requirements,
unvaccinated americans are largely driving that surge, only about 53% of the population is fully vaccinated. and experts say the delta variant could also be a factor in waning immunity from vaccines. remember we made is a two dose regimen, we were dealing with an emergent situation and they were life saving. and they have been life saving. what we re observing now not only here in the united states but in other countries including israel and the uk, that the durability of the protection tends to wane particularly in the context of the delta variant. rollout of any booster of course is subject to regulatory approval, so a large group of fully vaccinated americans may have to wait a little longer before they roll up their sleeves for a third shot.
plain spoken questions here. are we in a situation now where we need the boosters or necessary because so many people chose to go unvaccinated? well isn t that the case to some extent? to some extent that s indirect. we need the boost because ultimately it may turn out, jim, that the ultimate proper immunization regimen is a three dose regimen. remember, we made it a two dose regimen. we were dealing with an emergent situation. we needed to get those vaccines out because they were life saving. in fact, they have been life saving. what we re observing now not only here in the united states but in other countries, including israel and the uk, that the durability of the protection tends to wane particularly in the context of the delta variant. the good news is the boosters
immunologist, i would not at all be surprised that the adequate full regimen for vaccination will likely be three doses. it is entirely understandable why the results that i ve just reported from the israeli boosters are so dramatic. and we all hope and i believe that we have good reason to believe that that only will not be a strong response but that it will actually be durable and if it is durable, then you re going to have very likely a three dose regimen being the routine regimen. after just one year on the job, japan s prime minister is effectively stepping down. he says he won t run in the liberal democratic party leadership race later this month because he wants to focus on covid pandemic countermeasures. the 72-year-old replaced the long time prime minister shinzo abe who retired for health reasons last september.