The director of the Centers for Disease Control and Prevention (CDC) said Sunday that the federal government doesn’t know how much CCP virus vaccine is available in the United States, posing a challenge to inoculation efforts. “One of the biggest problems right now is, I can’t tell you how much vaccine we have,” CDC Director Dr. Rochelle Walensky told “Fox News Sunday.” “And if I can’t tell it to you then I can’t tell it to the governors and I can’t tell it to the state health officials,” she added. Responding to questions about vaccine supplies in context of the Biden administration’s plans to inoculate 100 million Americans in 100 days, Walensky said the lack of clarity around how much vaccine there is nationally makes this objective more difficult to accomplish. “If they don’t know how much vaccine they’re getting not just this week but next week and the week after …