"They did not test affirmative for coronavirus and they returned to the base", said Gerald Huber, Solano County Director of Social and Health Services.
The new numbers will likely change health officials' approaches.
The US is bracing for the new coronavirus that has now struck 60,000 people worldwide to spread in the US, officials said the previous day. "Things may not always go as smoothly as we'd like", she said, adding that the reagent will be remanufactured.
The initial group of almost 200 evacuees were released earlier this week from March Air Reserve Base near Los Angeles after the 14-day presumed incubation period of the virus had lapsed without anyone falling ill, the CDC said.
CDC distributed its test for coronavirus to more than 100 labs across the U.S., and as many worldwide last week.
But, the same day, the CDC confirmed that there was a thirteenth coronavirus patient in the United States, a woman who had also been evacuated from Wuhan, on one of the last two flights.
Officials have not said how numerous kits are flawed.
'Since airport screening began in mid-January we have screened more than 30,000 passengers. NCIRD, which she heads, is part of CDC. Each kit can test about 700 to 800 specimens from patients, the agency said.
Hundreds of people, including U.S. State Department employees and their families, have arrived at military bases in California, Texas and Nebraska aboard chartered flights from Wuhan, a city of 11 million that is the epicenter for the virus.
After they arrived back at the base, the mistake was discovered and the tests were run on the three Miramar patients.
Appropriate infection control procedures were in place the whole time, Messonnier said.
Covid-19 continues its relentless spread throughout China.
Separately, it was reported that United Airlines will extend cancellations of all U.S. flights to China through late April due to the coronavirus epidemic.
Janssen also will ramp up production and manufacturing capacities to manufacture the candidate vaccine, similar to the approach it used with its Ebola vaccine, which is now being used in the Democratic Republic of the Congo.