An update on the Covid-19 vaccine rollout from the Health Service Executive (HSE) shows 855,360 doses were received by the State up to March 19th.
Of the doses delivered, 680,015 had been administered as of March 21st, with the HSE stating that 95 per cent of the jabs coming into the country are given within seven days of arrival.
The 175,345 dose discrepancy is largely down to shots which must be held back for second doses.
The HSE said Moderna Inc, which has supplied 68,400 doses to date, request that half of their vaccines be kept in reserve to be given as second doses, while an "appropriate buffer amount" of Pfizer and AstraZeneca vaccines are also maintained for this reason.
Pfizer has made the largest contribution to the State's vaccine supply, delivering 570,960 doses up to last Friday. In the week ending March 14th, the company sent just under 61,000 shots, falling slightly to just under 60,000 last week.
AstraZeneca pause
The pausing of the use of the AstraZeneca vaccine on March 14th impacted their deliveries, with only 9,600 doses arriving in the Republic last week compared to 84,000 the week before.
The company's supply issues are also illustrated in the HSE data, showing only 36,000 shots arrived here in the week ending March 7th.
According to information from the National Public Health Emergency Team (Nphet), the dosage breakdown of administered shots is 495,824 first doses and 184,191 second doses.
Also, the latest data from the European Centre for Disease Control and Prevention (ECDC) found Ireland has the eighth highest rate of first dose uptake among 30 EU/EEA countries, with a rate of 13.3 per cent.
