One case was in a male and the other was in a female, both of whom were below 60 years, according to the agency, taking the total number of confirmed such cases to 17 out of 8 million shots given.
The new cases come after US health regulators on Friday recommended resumption of use of J&J's shot, ending a 10-day pause to investigate its link to extremely rare but potentially deadly blood clots.
The CDC's moratorium on most residential evictions - which the agency justified citing the public health crisis - had been set to expire on Wednesday.
"Keeping people in their homes and out of crowded or congregate settings - like homeless shelters - by preventing evictions is a key step in helping to stop the spread of COVID-19," CDC Director Rochelle Walensky said in a statement.
Though concern has grown over variants of the virus, especially those that appear to spread more easily and render current shots less potent, Fauci sounded a hopeful note on whether another surge was coming.
The guidance is also expected to cover ventilation in classrooms, contact tracing and quarantine protocols.
Pressure to reopen or expand in-person learning has been building as nearly a year of remote learning has taken a toll on US education and family life.
"CDC does not approve this study," an official at the quarantine site wrote to Lawler in a Feb. 8 email obtained by Reuters. "Please discontinue all contact with the travelers for research purposes."
At a crucial moment in the pandemic when Americans were quarantined after possible exposure to the virus abroad.
The CDC has said healthcare workers and nursing home residents should have priority for vaccines, to be followed by people over 75 and essential workers.
Although the federal government has distributed more than 21 million doses, only about 6 million have been administered.
Airlines are seeking at least 14 days before new requirements take effect and "consideration of inadequate testing and results availability in specific countries rather than a blanket worldwide requirement is also needed," the letter said.
California has lost 3,238 lives to COVID during the past 14 days, and averaged 230 deaths daily over the past week, pushing total coronavirus fatalities in the state above 24,000 to date.
Washington state Governor Jay Inslee this week ordered a 14-day quarantine for travelers arriving from the UK, South Africa or other countries where the new variant had been detected.
Trump, who frequently downplayed the severity of the pandemic and feuded with top US public health officials, was hospitalized in October after testing positive for COVID-19.
Doses of the vaccine will reach 145 locations across the country on Monday, with initial shots to go to healthcare workers and elderly residents of long-term care homes.
