and if you knew how to stop that, would you?

Now imagine that 60 planes full of babies under five crash every single day

That's the number of kids that never make it to their fifth birthday

6.6 million children never make it to their fifth birthday

Most of these deaths are preventable, and that doesn't just make me sad

it makes me angry, and it makes me determined

Diarrhea and pneumonia are among the top two killers of children under five

and what we can do to prevent these diseases isn't some smart, new technological innovations

It's one of the world's oldest inventions: a bar of soap

Washing hands with soap, a habit we all take for granted,can reduce diarrhea by half

can reduce respiratory infections by one third.

Handwashing with soap can have an impact on reducing flu, trachoma, SARS, and most recently in the case of cholera and Ebola outbreak

one of the key interventions is handwashing with soap.

Handwashing with soap keeps kids in school. It stops babies from dying

Handwashing with soap is one of the most cost-effective ways of saving children's lives

It can save over 600,000 children every year

That's the equivalent of stopping 10 jumbo jets full of babies and children from crashing every single day

I think you'll agree with me that that's a pretty useful public health intervention

So now just take a minute. I think you need to get to know the person next to you

Why don't you just shake their hands. Please shake their hands

All right, get to know each other. They look really pretty. All right.

So what if I told you that the person whose hands you just shook actually didn't wash their hands when they were coming out of the toilet?

They don't look so pretty anymore, right? Pretty yucky, you would agree with me.

Well, statistics are actually showing that four people out of five don't wash their hands when they come out of the toilet, globally.

And the same way, we don't do it when we've got fancy toilets, running water, and soap available,

it's the same thing in the countries where child mortality is really high.

What is it? Is there no soap?

Actually, soap is available. In 90 percent of households in India

94 percent of households in Kenya, you will find soap

Even in countries where soap is the lowest, like Ethiopia, we are at 50 percent.

So why is it? Why aren't people washing their hands?

Why is it that Mayank, this young boy that I met in India, isn't washing his hands?

Well, in Mayank's family, soap is used for bathing, soap is used for laundry, soap is used for washing dishes

His parents think sometimes it's a precious commodity, so they'll keep it in a cupboard

They'll keep it away from him so he doesn't waste it.

On average, in Mayank's family, they will use soap for washing hands once a day at the very best

and sometimes even once a week for washing hands with soap

What's the result of that? Children pick up disease in the place that's supposed to love them and protect them the most, in their homes.

Think about where you learned to wash your hands

Did you learn to wash your hands at home? Did you learn to wash your hands in school?

I think behavioral scientists will tell you that it's very difficult to change the habits that you have had early in life

However, we all copy what everyone else do

and local cultural norms are something that shape how we change our behavior, and this is where the private sector comes in

Every second in Asia and Africa, mothers buy…111 mothers will buy this bar to protect their family

Many women in India will tell you they learned all about hygiene, diseases, from this bar of soap from Lifebuoy brand

Iconic brands like this one have a responsibility to do good in the places where they sell their products

It's that belief, plus the scale of Unilever, that allows us to keep talking about handwashing with soap and hygiene to these mothers

Big businesses and brands can change and shift those social norms and make a difference for those habits that are so stubborn.

Think about it: Marketeers spend all their time making us switch from one brand to the other.

And actually, they know how to transform science and facts into compelling messages.

Just for a minute, imagine when they put all their forces behind a message as powerful as handwashing with soap

The profit motive is transforming health outcomes in this world.

But it's been happening for centuries: the Lifebuoy brand was launched in 1894 in Victorian England to actually combat cholera.

Last week, I was in Ghana with the minister of health,because if you don't know

there's a cholera outbreak in Ghana at the moment

A hundred and eighteen years later, the solution is exactly the same

It's about ensuring that they have access to this bar of soap, and that they're using it

because that's the number one way to actually stop cholera from spreading

I think this drive for profit is extremely powerful, sometimes more powerful than the most committed charity or government.

Government is doing what they can,

especially in the term of the pandemics and epidemics such as cholera, or Ebola at the moment, but with competing priorities

The budget is not always there.

And when you think about this, you think about what is required to make handwashing a daily habit

it requires sustained funding to refine this behavior

In short, those that fight for public health are actually dependent upon the soap companies to keep promoting handwashing with soap

We have friends like USAID, the Global Public-Private Partnership for Handwashing with Soap,

London School of Hygiene and Tropical Medicine, Plan, WaterAid, that all believe for a win-win-win partnership

Win for the public sector, because we help them reach their targets

Win for the private sector, because we build new generations of future handwashers

And most importantly, win for the most vulnerable

On October 15, we will celebrate Global Handwashing Day

Schools, communities, our friends in the public sector and our friends in the private sector —yes, on that day even our competitors

we all join hands to celebrate the world's most importantpublic health intervention

What's required, and again where the private sector can make a huge difference,

is coming up with this big, creative thinking that drives advocacy

If you take our Help a Child Reach 5 campaign

we've created great films that bring the message of handwashing with soap to the everyday person in a way that can relate to them

We've had over 30 million views.

Most of these discussions are still happening online. I urge you to take five minutes and look at those films

I come from Mali, one of the world's poorest countries.

I grew up in a family where every dinner conversation was around social justice

I trained in Europe's premier school of public health

I think I'm probably one of the only women in my country with this high degree in health

and the only one with a doctorate in handwashing with soap

Nine years ago, I decided, with a successful public health career in the making

that I could make the biggest impact coming, selling and promoting the world's best invention in public health: soap.

We run today the world's largest handwashing program by any public health standards

We've reached over 183 million people in 16 countries

My team and I have the ambition to reach one billion by 2020

Over the last four years, business has grown double digits, whilst child mortality has reduced in all the places where soap use has increased.

It may be uncomfortable for some to hear — business growth and lives saved somehow equated in the same sentence

but it is that business growth that allows us to keep doing more.

Without it, and without talking about it, we cannot achieve the change that we need.

Last week, my team and I spent time visiting mothers that have all experienced the same thing:

the death of a newborn. I'm a mom.

I can't imagine anything more powerful and more painful.This one is from Myanmar.

She had the most beautiful smile, the smile, I think, that life gives you when you've had a second chance.

Her son, Myo, is her second one.

She had a daughter who passed away at three weeks

and we know that the majority of children that actually die die in the first month of their life

and we know that if we give a bar of soap to every skilled birth attendant,and that if soap is used before touching the babies

we can reduce and make a change in terms of those numbers

And that's what inspires me, inspires me to continue in this mission

to know that I can equip her with what's needed so that she can do the most beautiful job in the world:

nurturing her newborn.

And next time you think of a gift for a new mom and her family, don't look far

buy her soap. It's the most beautiful invention in public health.

I hope you will join us and make handwashing part of your daily lives

and our daily lives and help more children like Myo reach their fifth birthday

Thank you.