Dr. Dong Xueshu, a medical entomologist, examines one of the hundreds of species of mosquitoes he has identified in Yunnan Province. Yunnan Institute for Parasitic Diseases, Pu'er Simao, Yunnan. April 2019.

Meng La County CDC staff demonstrate how to conduct indoor residual spraying. Trained technicians spray the insecticide on walls inside people’s homes. After a blood meal, Anopheles mosquitoes resting on those walls absorb the insecticide and die. Mohan Village, Meng La County, Yunnan Province. April 2019.

Xu Shiyan (in the back), works with colleagues Li Chunxin (with ponytail) and Wu Linbo to test blood samples for malaria parasites. Yunnan Institute of Parasitic Diseases, Pu'er Simao, Yunnan Province, China. April 2019.

Community members wait to see a nurse at a health centre in Kaliakoir sub-district. Gazipur District, Bangladesh. August 2019.

Families gather at a community centre in Kaliakoir sub-district to have their children vaccinated. Bangladesh was recently verified as having controlled hepatitis B, due to several years of high coverage with hepatitis B vaccine. Gazipur District, Bangladesh. August 2019.

Razia Sultana, a health worker, explains why women of childbearing age should be vaccinated against tetanus. The Clostridium tetani bacterium live in the everyday environment, and can infect a newborn baby and the mother if the baby is born in unsanitary conditions. Boktarpur village, Kaliganj, Gazipur District, Bangladesh. August 2019.

A child receives a vaccine containing hepatitis B protection. An independent expert committee at WHO SEAR verified that Bangladesh reached the goal of controlling hepatitis B by 2020. Kaliakoir, Gazipur District, Bangladesh. August 2019.

Young women walk home together after they've received a tetanus vaccination. The vaccine protects both the mother and the newborn from deadly tetanus during childbirth. Bangladesh eliminated maternal-neonatal tetanus in 2008 through high coverage of tetanus vaccine amongst women of reproductive age. Boktarpur Village, Kaliganj, Gazipur District, Bangladesh. August 2019.

A young woman waits to be vaccinated against tetanus. Vaccination in her reproductive years will protect her and her babies from the disease. Kaliakoir, Gazipur District, Bangladesh. August 2019.

Community health assistant Iata Akter, reviews the routine immunization session she and her colleagues have just provided, with Dr. Prosun Roy, a WHO surveillance medical officer, Gazipur District, Bangladesh. August 2019.

Dr. Prosun Roy is a WHO Surveillance Medical Officer, responsible for Gazipur district just north of Dhaka. He offers technical support to district health workers to plan and monitor immunization sessions, and also investigates potential cases of vaccine-preventable disease such as measles. Kaliganj, Gazipur District, Bangladesh. August 2019.

Kids walk home together after a routine immunization session in their village. Young babies were vaccinated against several diseases including polio, measles, hepatitis B, diptheria and whooping cough , while young women were vaccinated against tetanus. Kaliakoir, Gazipur District, Bangladesh. August 2019.

Laboratory biotechnologist Agrippine Mukarurangwa prepares to test blood at a Kigali laboratory of the Rwanda Biomedical Centre. During hepatitis screening campaigns, this laboratory receives hundreds of samples for viral load testing. Kigali, May 2019.

A nurse squeezes a few drops of blood to screen for hepatitis infection. One reason it’s possible to eliminate hepatitis C in Rwanda is because of rapid diagnostic tests that cost just $1 each. Those who are positive for hepatitis C will be offered treatment with a 95% cure rate. Rwamagana, Rwanda. June 2019.

A nurse takes a pinprick blood sample from a person who is being tested for hepatitis C. The rapid diagnostic test costs only $1, and a person can find out their hepatitis C status in about twenty minutes. A counsellor will advise of their results. This affordable rapid diagnostic test is one tool that is allowing Rwanda to aim to eliminate Hepatitis C by 2024. Rwamagana, Rwanda. June 2019.

A nurse tells a man the results of his rapid diagnostic test for hepatitis. These tests are free-of-charge to the public, and will be administered more than four million times in the next five years in Rwanda. Rwanda’s hepatitis C elimination plan will avert about 35,000 premature deaths and more than 10,000 new hepatitis C infections. Rwamagana, Rwanda. June 2019.

Workers at the Rwanda Biomedical Centre’s medical warehouse load a truck destined for a hospital about 45 minutes north of Kigali. Supplies of direct-acting antivirals (DAAs) for treatment of hepatitis C will be distributed and available at each of the 504 health centres in the country, so that people can receive treatment and care close to home. Kigali, May 2019.

Augustin Nsengiyumva is a vaccine nurse at the Rwamagana hospital. He learned he had hepatitis C when he was screened during a government-sponsored campaign in 2017. Augustin and his wife were diagnosed before they had any liver damage. They were prescribed direct-acting antivirals - a newer treatment with a 95% cure-rate - and were both cured completely within three months. Augustin says he was “super happy” when he learned the results. Rwamagana, Rwanda. June 2019

Teenage girls practice netball at the Amahoro national stadium in Kigali. Rwanda has made great strides in improving health outcomes for its population. The country's plan to eliminate hepatitis C through a simple "test and cure" approach is another step towards better health for all Rwandans. Kigali, June 2019

An array of routine vaccines at the Gautampuri Mother and Child Welfare Centre in Shahdara district in Delhi. The one with the pink cap is rotavirus vaccine, which was introduced in early August in Delhi. August 2019.

Piwai breastfeeds her 42 day old baby, named Nital. Gautampuri, Delhi, August 2019.

Baby Arish receives a vaccine in a small health post in Majnu Ka Tila, Delhi. The Ministry of Health and Family Welfare is aiming to reach more than 90% of children in India with all of the vaccines that are part of India's routine immunization schedule. August 2019.

Accredited social health activists, or "ASHAs" are the link between communities in India and primary health services. ASHAs will each be responsible for about 400 households. Their main role is as educator and promoter - ensuring families have the information they need to access maternal and child health services, including immunization. Gautampuri, Delhi August 2019.

Madhu Bala, in pink, is an accredited social health activist - more commonly known as an ASHA - in Majnu Ka Tila area of Delhi. ASHAs are volunteers and help to monitor child health in Indian communities. August 2019.

People from the community of Nadi gather for an outreach routine immunization session, where primary health services will be offered to pregnant women and children. Nadi is a community of migrant construction workers. Badshahpur village, which includes Nadi has mapped out these migrant communities so they can regularly receive more health services. Gurugram district, Haryana State, India. August 2019.

An auxiliary nurse midwife (ANM) prepares to vaccinate a baby in the Nadi settlement - a migrant worker's community in Gurugram district, bordering south-west Delhi. Haryana State, India. August 2019.

A pregnant woman receives iron folate tablets in Nadi village. These tablets will help to prevent anaemia and low birth weight. Nadi Village, Haryana State, India. July 2019.

Two accredited social health activists, known as "ASHAs" walk up to a household to find a woman who has recently moved to the area so they can connect her to the outreach immunization taking place nearby. Gurugram district, Haryana State, India. August 2019.

A pregnant woman in Nadi, presents for an antenatal check-up during a primary health care outreach session. Gurugram district, Haryana State, India. August 2019.

Commodities that are offered at a routine immunization outreach session. These include routine vaccines, iron and folic acid for pregnant women, vitamin A liquid, oral rehydration salts, calcium and vitamin Dx, paracetamol and deworming tablets. Haryana State, India. August 2019.

An accredited social health activist - more commonly known as an "ASHA" walks through her community. She is a volunteer who is responsible for educating and promoting health services to her community . TIgra settlement, Gurugram district, Haryana State. August 2019.

A view of the Kathmandu valley, from Bhaktapur district. Nepal August 2019.

The National Public Health Laboratory in Kathmandu. The laboratory is equipped to test for vaccine-preventable diseases including measles, rubella and japanese encephalitis.Kathmandu, Nepal. August 2019.

A mother waits to have her young son vaccinated at Patan Hospital. Lalitpur, Nepal. August 2019.

Nanu Sharma receives one of several vaccines at the Tathali health post, as mother Anju looks on. The nurse vaccinator Hem Lama says he loves his job as it allows him to serve his community. Bhaktapur District, Nepal. August 2019

A mother looks on as her baby is vaccinated in the arms of her grandmother. Tathali health post, Bhaktapur, Nepal. August 2019.

Mothers and children visit after their babies have been vaccinated during a routine immunization session at the Tathali health post. Demand for vaccines is high in Nepal, and this area became the first in the Kathmandu valley to achieve 'fully vaccinated" status - meaning that all children living in the area had received all vaccines for their age. Tathali, Bhaktapur, Nepal. August 2019.

Dr. Imran Ansari examines a child with pneumonia at Patan Hospital. He says the fact there are so few measles cases these days frees up resources to treat children for other illnesses. The child he is examining here has pneumonia. Patan Hospital, Lalitpur, Nepal. August 2019.

The pediatric special clinic at Siriraj Hospital in Bangkok, Thailand. August 2019.

Nurses at Siriraj Hospital in Bangkok take blood samples from pregnant women. The blood will be screened for infectious disease including hepatitis B. Siriraj Hospital, Bangkok, Thailand. August 2019.

Akachai is being vaccinated for hepatitis B. His partner, Aoithip, is a hepatitis B carrier. He was born before the vaccine was offered universally in Thailand. Screening and then vaccinating him today will help to ensure he is never infected. Siriraj Hospital, Bangkok, Thailand. August 2019.

Professor Dr. Yong Poovarawan is a leading Thai virologist. His research led to a refinement of the hepatitis B vaccination schedule and included breakthrough long-term studies of vaccine efficacy for the same people over the course of twenty years. This kind of research contributed to Thailand controlling hepatitis B nationally. Chulalongkorn University, Bangkok, Thailand. August 2019.

Paweethida is six months old. She's at the local health centre with her mom, Boonma Boondasa, to have her final shot against hepatitis B and other vaccine-preventable diseases. Taldeaw Health Promotion Hospital, Khaeng Koi district, Saraburi province, Thailand. August 2019.

Yupawan Siri (28), her husband Boonjun Yimklang, and their two-month old son Thanakorn. Yupawan is a hepatitis B carrier - which is still fairly common in people born before the hepatitis B vaccine was introduced in Thailand in 1992. Because of Yupawan’s hepatitis B status, Thanakorn will receive one extra dose of hepatitis B vaccine, for a total of 5, to protect him completely from the virus. Hatsongkwai Village, Khaeng Koi district, Saraburi province, Thailand. August 2019.