IP- Four people infected with the Coronavirus after receiving the second dose of the vaccine in Oregon, California, raising doubts about vaccine efficiency in the United States.

Iran Press/America:  Four people in Oregon, CA., have contracted the coronavirus despite being fully vaccinated - i.e., more than two weeks after receiving the second dose of the vaccine.

 It is unclear which of the two available vaccines - Pfizer/BioNTech or Moderna - was used to vaccinate the four Oregonians.

According to the Oregon Health Authority, two of the so-called "breakthrough" cases were identified in Yamhill County, and the other two were registered in Lane County. 

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