Why is Israel rolling out third vaccine doses now?

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Israel Begins Administering Third Vaccine Doses to Immunocompromised Individuals Amidst Rising Cases

Israel commenced the administration of a third dose of the Pfizer/BioNTech coronavirus vaccine on July 12, targeting individuals with compromised immune systems. This decision was prompted by accumulating evidence suggesting that a two-dose regimen does not elicit a sufficient antibody response in these patients, coupled with a significant increase in daily COVID-19 cases.
Eligibility for Third Doses

The initial group eligible for a third vaccine shot includes patients who have undergone heart, lung, and kidney transplants, as well as certain cancer patients. This measure aims to bolster the immune response in those identified as particularly vulnerable and less likely to achieve adequate protection from the standard two-dose vaccination schedule.
Evidence of Inadequate Antibody Response

A statement from the health ministry indicated that there is growing evidence showing that patients with immunosuppression do not develop an adequate antibody response after receiving two doses of the vaccine. This observation underscores the rationale behind offering an additional dose to this specific demographic.
Impact of Rising Cases and Delta Variant

The decision to proceed with a third dose was significantly influenced by a rise in the daily tally of COVID-19 cases. The emergence and spread of the Delta variant in Israel have contributed to a surge in transmission, with several hundred new infections being recorded daily. Experts have noted that the vaccine appears less effective in preventing mild illness when confronted with the Delta variant, further compounding concerns.

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Why is Israel rolling out third vaccine doses now?

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