The disease often infects people after they come into contact with the blood of infected animals and was spotted for the first time in the village of Samoa in late January for the first time.
Samoa's island population of just 200,000 has been gripped by the highly infectious disease that has killed 81 people, most of them babies and young children, and infected more than 5,600 people.
The immunisation, carried out under emergency powers, is a desperate bid to halt measles infection rates that have been inexorably rising since mid-October, with most of the victims young children.
In all, 53 people have died since late October. Most of those who have died have been babies and young infants, including 23 babies aged under 12 months and another 25 children aged between 1 and 4 years.
Officials declared a state of emergency and said a compulsory immunisation programme was making progress, with more than 17,000 people vaccinated in the past five days.
Scotland win 34-0 against Samoa in Kobe that saw Pacific islanders finish a man down.
Weather experts said Gita was packing sustained winds of 275 kmh (170 mph) and was expected to intensify before making landfall.
Turkey's Religious Affairs Directorate translated the Quran into Samoan for the Pacific island's 130 Muslims.
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