Rachel and Yitzhak Na'eh, both in their mid-80s, succumb to virus, after suffering from pre-existing conditions as well; become week's 3rd and 4th vaccinated patients to die

Decision to give third shot to those with weakened immune systems comes after government weighs 'accumulating evidence' that immunocompromised aren’t well enough protected

Most of the vaccinated people who have been recently infected got the shot around January, figures given to Health Ministry show; some caution it's too early to draw conclusions

Study also indicates that elderly, immunocompromised retained high antibody levels; government weighing new measures amid signs vaccine less effective against Delta variant

PM Bennett instructs Health Ministry to promote medical studies into long-term efficacy of Pfizer vaccine to provide decision-makers with 'vital information' on booster shots

Ministers to reportedly mull caps on gatherings, reintroducing 'Green Pass' in limited format, forcing parents of infected kids to enter quarantine

PM also discusses possible swap with other nations of immunizations on brink of expiration date; Health Ministry to recommend third booster shot for immunocompromised

Pfizer has not yet sanctioned booster shots, but there is concern vaccine less efficient in protecting such individuals, Kan reports

Number of serious cases drops slightly despite rise in daily infections, as inoculations seen to be doing their job

Biotech firm reportedly says it doesn't have enough information to ensure doses would still be safe; surplus Moderna shots being considered as stopgap