Natarsha Belling

And more than 1,000 Marilyn Monroe lookalikes have gathered to mark what would have been the Hollywood star's 100th birthday.

The fans putting on blonde wigs and white dresses at Palm Springs in California and paying tribute to the movie legend.

The turnout was so impressive, they actually set a new Guinness World Record for the most people dressed as Marilyn Monroe.

Marilyn died from apparent suicide in 1962 at the age of 36.

Now it's time to get into our deep dive on the latest Ebola outbreak in the Congo and Uganda, which has killed at least 43 people with more than 263 other cases so far confirmed.

But experts are concerned that toll may be much higher, with a top official at Doctors Without Borders warning, quote, nobody knows the true scale and severity of this outbreak.

Joining us is Australian epidemiologist Professor Paul Griffin from the University of Queensland.

Paul, thanks so much for joining us.

We have known of great concern is this latest Ebola outbreak.

Can you just unpack exactly what it is and why it's so concerning?

We've seen over the last couple of days, one of the doctors from Doctors Without Borders, and I'm quoting him here, has said, nobody knows the true scale and severity of this outbreak.

We know for the affected regions right now, which it seems to be contained to the Democratic Republic of Congo, not only for those residents from an overall point of view, could we see this spread?

So Paul, in regards to this latest outbreak, from what we can understand, you mentioned it earlier, this seems to be a very rare strain with Ebola that there is not a current vaccine available.

We know this Ebola outbreak is heartbreakingly so affecting very impoverished communities in quite remote areas.

Does this highlight to you again that as an overall process, we need to be concerned about the health of everyone, regardless of their socioeconomic background?

In these local communities over the last couple of days, we've seen protests because there had been speculation about US authorities coming into these communities and setting up disease prevention centres.

What are some of the locals' concerns about US interference in this situation?

Well, you mentioned earlier, this is certainly a global problem.

Is the WHO, the World Health Organisation, doing all that it can right now to properly control or deal with this really serious Ebola outbreak?

And just on that point of view, what advice would you give to Australians right now who are watching this situation unfolding and are very concerned?