Her thin body was ravaged by Malaria and she was shuttled in and out of hospitals all her life. She was so sick that her parents had to give up their jobs and care for her siblings.

Ms. Abdullah said that her mother gave up at one point.

The poor community in Kisumu, where Ms. Abdullah lives, has a high incidence of Malaria. One of her friends died of Meningitis after they became infections. She said thatMalaria has hurt us as a nation.

There are tens of millions of horror stories. Malaria is a rare global health problem that experts are so confident in that they've begun to talk about eliminating it.

The director for Malaria programs at the Bill and Melinda Gates Foundation thinks there's room for optimism. We could actually start a push that would get us all the way to zero.

Six countries in the Greater Mekong region, including Vietnam and Thailand, have driven down the number of malaria cases by about 90 percent. 25 countries are expected to have eliminated the mosquito-borne disease.

Africa has the majority of infections. More African children received preventive malaria drugs in 2020 than in the previous year.

The arrival of two new vaccines is a sign of a change. 35 years has passed since the first Mosquirix was made. It was approved by the World Health Organization just a year ago.

The Oxford team that created the Covid vaccine is working on a more powerful vaccine. It is believed that this formula has shown an efficacy of up to 80 percent in clinical trials, which may change the fight against Malaria.

ImageA woman in her 30s, in a white dress, sitting in a brown armchair and gazing at the camera.
Miriam Abdullah at home in Nyalenda, a poor community in Kisumu. Some of her friends developed meningitis after becoming infected with malaria; one died. “Malaria has really tormented us as a country,” she said.
A woman in her 30s, in a white dress, sitting in a brown armchair and gazing at the camera.
ImageThe woman in the white dress pulling a box of pills used to treat malaria out of a purse
Malaria medication in Ms. Abdullah’s purse.
The woman in the white dress pulling a box of pills used to treat malaria out of a purse
ImageA woman, shrouded by a blue mosquito net, sits on a bed and smiles at a small child held up by a man on the other side of the netting.
A woman, shrouded by a blue mosquito net, smiling at her son while sitting on a bed.
A woman, shrouded by a blue mosquito net, sits on a bed and smiles at a small child held up by a man on the other side of the netting.

The German company BioNTech is developing a vaccine that can prevent Malaria for six months or longer, as well as bed nets coated with long- lasting insecticides or with chemicals that paralyze mosquitoes.

The Mosquirix vaccine was given to children in a pilot test in Africa.

It will take more than promising tools to eliminate Malaria. Distribution of vaccines, drugs and bed nets is difficult in many African countries.

The funding for Malaria programs is more generous than for many other diseases that plague the poor nations. Money devoted to one approach can lead funders to neglect other approaches.

Mosquirix cost more than $200 million to develop and is only half as effective as Oxford's vaccine. Mosquirix won't be delivered to African children until later in the century. The supply is expected to remain constrained for a long time.

Mosquirix will be distributed by a nongovernmental organization in December of this year. Unicef granted a $170 million contract to the manufacturer of the vaccine in August.

The 100 million doses that will be needed each year is much lower than that.

R21 appears to be cheaper and easier to make than the first vaccine. The Serum Institute of India is capable of producing more than 200 million doses a year.

The world needs every option it can get, according to some Malaria experts. Some worry that the dollar spent on Mosquirix is less for developing other tools.

The Center for Global Development in Washington says existing malaria control measures are already underfunded. A new tool without additional funding means sacrifice and an opportunity cost.

ImageA pink sunset and gray skies over a small river, its banks strewn with trash, running through a settlement in Kenya.
A sunset on the banks of the Wigwa River, which flows through Nyalenda and is a breeding site for mosquitoes.
A pink sunset and gray skies over a small river, its banks strewn with trash, running through a settlement in Kenya.

One of the most deadly diseases is Malaria. There were 229 million new infections and 558,000 deaths in the United States in the year 2019.

The Covid pandemic did not cause Malaria infections, but it did reverse the downward trend in Malaria deaths, which went up to over 600,000 in 2020.

Most of the deaths caused by Malaria are in children younger than 5 years of age.

There are many strategies to fight Malaria that are not accessible to millions of people. Only a small percentage of African children sleep under bed nets that are treated with pesticides, and only a small number receive seasonal drugs that prevent the disease.

Social inequalities are caused by malaria. Children are robbed of the ability to fight other pathogens, health care systems are overwhelmed, and communities are devastated by it. Malaria can be spread to as many as 100 other people if a person with the disease doesn't get treated.

It's more difficult to create a vaccine against a parasites than it is to create a vaccine against aviruses. The organisms that cause Malaria in Africa rapidly change from one form to another.

People are vulnerable to disease due to the body's inability to recognize and defend itself against this shape-shifter.

The form of the parasites that can be transmitted is called sporozoites. Within 30 minutes of being bitten, the sporozoites enter the body and begin to grow. Mosquirix and R21 can be used to target sporozoites.

Many children are in need of a blood transfusion when they are taken to the hospital because the parasites wreck the body so fast. Half or more of a small child's blood can be thrown away if you use a bag for it.

There's nothing you can do for a child who is pale and floppy and breathing quickly.

She said that you have to prevent Malaria.

ImageA doctor examining the arm of a small girl, in a white T-shirt with an American flag on the back, as she sits in her mother’s lap.
A girl about to receive a dose of malaria vaccine at the Ring Road Clinic in Nyalenda.
A doctor examining the arm of a small girl, in a white T-shirt with an American flag on the back, as she sits in her mother’s lap.
ImageA small laboratory with bars on the windows, charts taped to the walls as well as a computer, microscope and other scientific equipment placed on three tables running along the room’s perimeter.
A laboratory at the Ring Road Clinic.
A small laboratory with bars on the windows, charts taped to the walls as well as a computer, microscope and other scientific equipment placed on three tables running along the room’s perimeter.
ImageA boy in a school uniform sitting in a chair as a doctor pricks his finger for blood.
A boy getting tested for malaria at Dunga Nursing and Maternity Ward in Kisumu. Roughly a third to half of the patients they see have malaria concerns or infections.
A boy in a school uniform sitting in a chair as a doctor pricks his finger for blood.

Mosquirix is a vaccine against parasites. Its effectiveness is less than expected.

The vaccine should be deployed alongside existing controls, like bed nets and preventive drugs, based on data indicating where the tools are most needed and delivered by a strong health care work force.

Dr. Thomas Breuer is the chief global health officer at Glaxo, which makes Mosquirix.

The vaccine was tested in children under the age of 2 years in three African countries. It is more convenient in rural settings than other vaccines have been.

Community health workers went door to door to let people know about Mosquirix. The vaccine was similar to routine immunizations despite the misinformation that was spread.

Many African countries have high levels of vaccine distrust. In a survey, half of the people in the Democratic Republic of Africa said they wouldn't trust a vaccine for the disease.

Mosquirix must be given in four doses, the first at 5 months of age, the second at 18 months of age, and the third at 18 months of age. Few other vaccines are given to children older than 18 months, and many parents in Africa can't afford to take their children to a clinic.

Researchers said that parents may think the first three doses of Mosquirix are protective. R21 has an efficacy of 70% after three doses. A booster is given a year after.

The last shot of Mosquirix would be easier if it was 18 months.

ImageA doctor with a face mask, standing before a pale green refrigerator, gesturing to a poster, affixed to a stained wall, that describes malaria vaccination.
A physician at the Ring Road Clinic.
A doctor with a face mask, standing before a pale green refrigerator, gesturing to a poster, affixed to a stained wall, that describes malaria vaccination.

The funds for Malaria are a pittance compared to the money spent on Covid vaccines. The Gates Foundation doesn't include its contributions to the Global Fund to Fight AIDS, Tuberculosis and Malaria in its spending.

People and organizations end up picking their favorites because of the scarcity of resources. Control of mosquitoes is the logical path according to some. Others think that the way forward is through the use of antibodies.

Mosquirix does not emerge as the obvious winner.

"Deploying a tool which is expensive and not that effective with a short duration of action may not be the thing that you want to lead to first."

Increasing use of bed nets or ensuring that people have access to basic primary health services are better uses of the money.

The Gates Foundation, which has poured more than $200 million into the development of Mosquirix, is no longer enthusiastic about it.

Some of the other stuff in the portfolio will be easier to deploy and scale up.

Some experts think that a vaccine with low efficacy is better than nothing.

ImageA woman in a blue top and brown skirt, her back to the camera, changing the diaper of a child lying on a large wooden table covered with a white cloth.
A woman changing a baby’s diaper at the Dunga Nursing and Maternity Ward.
A woman in a blue top and brown skirt, her back to the camera, changing the diaper of a child lying on a large wooden table covered with a white cloth.
ImageBlue mosquito nets attached to poles in a garden.
Mosquito nets in a garden in Kisumu.
Blue mosquito nets attached to poles in a garden.
ImageA woman in a white dress reaching for one two pieces of paper covered in drawings hanging on a rose colored wall next to a dart board and four small photos of a child.
Ms. Abdullah in her daughter’s room. Next to the baby photos on the wall are letters the child wrote thanking her mother for protecting her from mosquitoes with nets and vigilance.
A woman in a white dress reaching for one two pieces of paper covered in drawings hanging on a rose colored wall next to a dart board and four small photos of a child.

Michael Anderson, a former director general of Britain's Department for International Development who now heads MedAccess, said that there is a vaccine that has been tested more than any other vaccine.

R21 costs less than $100 million to be developed. It could be authorized a few months after the final data is submitted, if regulators are as quick as they were with Covid.

Adrian Hill is the architect and director of the University of Oxford's Jenner Institute.

There isn't enough of Mosquirix. R21 is a more modern product so it would be easier to deliver. In 2012 it was designed.

Many parents in Africa are waiting for a vaccine. In Kisumu, Ms. Abdullah wants to immunize her 2-year-old daughter against the mosquito-borne disease that ravaged her childhood.

She said she'd go for it. I would get the Covid-19 vaccine before I got it.