Ebola outbreak: Get up

(CNN) -- As Ebola cases rise to staggering numbers, so do the fears and concerns among nations -- along with reports of infections in Spain and the United States.

With multiple developments on numerous fronts, here's what you need to know Wednesday to quickly get caught up on the latest.

WEST AFRICAN CASESLevy: 'My heart sunk' Could Dallas Ebola patient face charges? Ebola survivor Joseph Yensy prepares to be discharged from the Doctors Without Borders treatment center in Paynesville, Liberia, on Sunday, October 5. Health officials say the Ebola outbreak in West Africa is the deadliest ever. More than 3,400 people have died, according to the World Health Organization.Photos: Ebola outbreak in West Africa Tough to recruit workers to fight Ebola Duncan given alternative Ebola treatment Centers for Disease Control and Prevention Director Dr. Tom Frieden has led the effort to evacuate and treat American patients and has helped U.S. hospitals prepare for a possible outbreak at home. The CDC also has teams working in West Africa assisting with contact tracing and infection control. Who's who in the Ebola outbreak? Did Duncan know he had Ebola? Grim tolls:

To date, the world's largest outbreak of Ebola has killed more than 3,400 people in Guinea, Liberia and Sierra Leone -- the nations hardest hit. Since March, more than 7,400 people have contracted Ebola in those nations, according to the World Health Organization. A handful of cases have been reported in Nigeria and Sierra Leone as well. The Centers for Disease Control and Prevention say infections could reach 1.4 million in four months.

U.S. CASES

Duncan's family claims bias in treatmen t:

Thomas Eric Duncan, the first person diagnosed with Ebola in the United States, received an experimental medicine nearly a week after being admitted into the hospital -- a far longer wait than experienced by four other Ebola patients treated in the U.S. The others are Americans; Duncan is Liberian. 'They don't consider him as important as the other three,' his nephew says. The hospital treating him denies the claim.

NBC cameraman Ashoka Mukpo is 'reasonably stable' but a doctor cautioned it's too early to say he's out of the woods. The American citizen got infected in Liberia, and was airlifted to Omaha for treatment on Sunday. He's receiving an experimental drug known as brincidofovir, or CMX001.

EUROPEAN CASES

Spain ramps up response:

Four more potential cases of Ebola are under observation in Spain, after a nurse's assistant there became the first person to contract Ebola outside Africa in the current outbreak. The cases include a second nurse's assistant. Both were on the same team.

Norwegian tests positive:

An unnamed Norwegian national, a staffer with Doctors Without Borders, has contracted the virus while working in Sierra Leone. The staffer was put in isolation Sunday, and will be moved to Europe for treatment.

RESPONSEClosed wallets:

It may dominate the headlines, but few Americans are opening up their wallets. Four major U.S. aid organizations surveyed by CNNMoney have received a combined total of $19.5 million so far. Much of that came from nonprofit foundations -- not individual donors. Last month, the United Nations said it would need nearly $1 billion to fight the virus.

Hospitals ready? Not really:

For all the pronouncements that the United States is prepared to combat Ebola, the nation's nurses disagree.

In a survey of the largest nurses' union, the National Nurses United, 85% of respondents said that nurses haven't been able to interact or ask questions at their hospitals about Ebola.