They are considered breakthrough cases as the individuals all got sick at least 14 days after receiving the second dose of the COVID-19 vaccine. Genome sequencing is underway, and we expect results next week, "Oregon's Health Authority said in a series of tweets on Friday".
Health Minister Brad Hazzard said the Therapeutic Goods Administration (TGA) has determined both the Pfizer and AstraZeneca vaccines to be safe and effective for use. "In those cases, even though the participants got COVID, the vaccines reduced the severity of illness", they added. "Getting as many Oregonians as possible vaccinated remains a critical objective to ending the pandemic".
Two of the four cases originated in Yamhill County, and the other two came from Lane County.
Japan has reached deals with three major pharmaceutical firms to buy enough Covid-19 vaccine doses for its population of 126 million. To date, OR officials are still gathering more data on the cases to provide more information to the public.
The drug, which proved 94 per cent effective in protecting against coronavirus in clinical trials, is set to become available in the United Kingdom in as little as two weeks.
Britain, which has recorded more than 120,000 deaths from COVID-19, was the first Western country to begin mass vaccinations in December, seeing the shots as a route out of strict lockdowns which have caused the biggest crash in economic output in more than 300 years.
Nearly 30 government ministers will tour vaccination centres, from sports stadia to cathedrals, to spread the message of the importance of getting a shot amid concern that some groups, such as certain ethnic minorities, are not taking up the offer to the same extent as the rest of the population.
"Remember to keep coming forward for testing even with the mildest of symptoms, wear a mask on public transport, socially distance and maintain good hygiene".
Last week, the Ministry of External Affairs had said India provided over 229 lakh doses of coronavirus vaccines to various countries out of which 64 lakh doses have been supplied as grant assistance and 165 lakh on commercial basis.