Ending TB Is Within Reach — So Why Are Millions Still Dying?

Ending TB Is Within Reach — So Why Are Millions Still Dying?

At Kaneshie Polyclinic, a health center in a hardscrabble neighborhood of Accra, the capital of Ghana, there is a rule. Every patient who walks through the door — a woman in labor, a construction worker with an injury, a child with malaria — is screened for tuberculosis.

This policy, a national one, is meant to address a tragic problem; two-thirds of the people in this country with tuberculosis don’t know they have it.

Tuberculosis, which is preventable and curable, has reclaimed the title of the world’s leading infectious disease killer, after being supplanted from its long reign by Covid-19. But worldwide, 40 percent of people who are living with TB are untreated and undiagnosed, according to the World Health Organization. The disease killed 1.6 million people in 2021.

The numbers are all the more troubling because this is a moment of great hope in the fight against TB: Significant innovations in diagnosing and treating it have started to reach developing countries, and clinical trial results show promise for a new vaccine. Infectious disease experts who have battled TB for decades express a new conviction that, with enough money and a commitment to bring those tools to neglected communities, TB could be nearly vanquished.

“This is the best news we’ve seen in tuberculosis in decades,” said Puneet Dewan, an epidemiologist with the TB program at the Bill & Melinda Gates Foundation. “But there’s a gap between having an exciting pipeline and actually reaching people with those tools.”

A recent visit to the Kaneshie clinic revealed both the progress and the remaining barriers. Despite the clinic’s policy of screening everyone for TB, which most often attacks the lungs, by asking a few questions about coughs and other symptoms, patients streamed into the single-story, cement-block building and were sent for care without any such queries. A member of the TB team, it turned out, was on holiday, another was on maternity leave and a third was out sick. That left just two, who were busy processing tests and doling out drugs.

So no one was screened, not that day or any other day in the previous week.

“It is a good policy, it works well when we can do it, but personnel is a problem,” said Haphsheitu Yahaya, the tuberculosis coordinator at the clinic.

When the screening policy is working, new medications — the first to come to market since the 1970s — can be taken as just a couple of pills each day, rather than as handfuls of tablets and painful injections, the way TB treatments have been delivered in the past.

Those diagnosed with drug-resistant TB receive medication to take for six months — a far shorter time than previously required. For decades, the standard treatment for drug-resistant TB was to take drugs daily for a year and a half, sometimes two years. Inevitably, many patients stopped taking the medicines before they were cured and ended up with more severe disease. The new drugs have far fewer onerous side effects than older medications, which could cause permanent deafness and psychiatric disorders. Such improvements help more people to continue taking the drugs, which is good for patients, and eases the strain on a fragile health system.

In Ghana and most other countries with a high prevalence of TB, the drugs are paid for by the Global Fund to Fight AIDS, Tuberculosis and Malaria, an international partnership that raises money to help countries fight the diseases. But contributions to the agency have been getting smaller with each funding round. Countries fighting TB are concerned about what may happen if that funding ends. Currently, the treatment for adults recommended by the W.H.O. costs at least $150 per patient in low- and middle-income countries.

“If our patients had to pay, we would not have one single person taking treatment,” Ms. Yahaya said.

Still, there has been progress in recent months in making the medicines more affordable, and prices may soon drop further. After prolonged pressure from patient advocacy groups, the United Nations and even the novelist John Green, who devoted his widely followed TikTok account to the issue, Johnson & Johnson has lowered the price of a key TB drug in developing countries. The company also agreed last month not to enforce a patent, which means generic drug companies in India and elsewhere will be able to make a significantly cheaper version of the medication.

And for the first time in more than a hundred years, there is real hope for an effective vaccine: A promising candidate called M72, developed by the pharmaceutical company GSK with financial backing from the Gates Foundation and other philanthropies, is now in the last stage of clinical trials.

(However, as ProPublica recently reported, it’s not clear who will have the rights to sell the vaccine, where it will be available and how much it will cost. Taxpayer and philanthropic money has paid for much of the vaccine’s development, but GSK retains control of critical components.)

M72 is one of 17 vaccine candidates that are currently being tested in trials, providing a wellspring of possibilities. The only TB vaccine in use today was first given to people in 1921; it is helpful primarily for babies and does little to protect adolescents and adults, who account for more than 90 percent of TB transmission globally.

Better technology to diagnose TB is slowly reaching clinics in developing countries. Clinics across South Asia and sub-Saharan Africa, including the one in Ghana, now have machinery to use rapid molecular diagnostic tests — equipment that was donated as part of the Covid response. That means that many health centers have finally stopped using an unreliable diagnostic method, developed in the 1800s, of viewing sputum smears under microscopes.

Still, in 2021 only 38 percent of people diagnosed with TB were first given a molecular test; the rest were diagnosed with a microscope, or, in many cases, by their clinical symptoms.

The molecular diagnosis can also spot drug-resistant TB right away. (The old method involved starting a person on a course of the most common drugs and waiting to see whether the treatment worked; if patients had the drug-resistant form of the disease, they just got sicker.)

Joshua Dodoo, a driver, came to Kaneshie clinic in March with a lingering cough. He had been shedding pounds and couldn’t sleep. When he saw a doctor for what he thought was malaria, he was sent for a TB test. The one PCR machine in the clinic’s lab was in heavy use, so it was a few days before he learned from a nurse that he had TB.

“I was so frightened,” Mr. Dodoo said, adding that he had not realized people still caught the disease.

His wife, Sadia Ribiro, was calmer and able to hear the nurse, Richard Boadi, explain that there is a cure, and that Mr. Dodoo would be given the treatment for free.

Ms. Ribiro was tested; people living in close contact with a person who has TB account for a significant percentage of the 10.6 million new infections each year. She was negative, and was put on a course of preventive drugs for three months. These medications are new, too: Until recently, preventive therapy could take a year or more, and few patients finished it.

But then, the system broke down. The couple’s two children, who are 3 and 11, were not screened. Mr. Dodoo said they were in school so it was difficult to bring them to the clinic, and they had seemed healthy. Then, even as he started regaining weight and feeling better, the children started coughing and complaining of fatigue.

But they didn’t get a test until months later, when Mr. Boadi tracked then down at home. Only 30 percent of TB infections in children are diagnosed.

Ms. Yahaya, the clinic director, said that, while preventive therapy worked remarkably well, the experience of Mr. Dodoo’s family was typical. People who are newly diagnosed don’t want anyone to know that they have the disease, which is associated with poverty and suffering, so they don’t volunteer information about other people who may have been infected. And the understaffed health system struggles to track them.

Only 169 health centers across Ghana have the capacity to use the new testing method. Usually, samples must be sent away — up to a three-hour drive in some rural areas. By the time results come in, it can be hard to track down those who were tested.

“The equation is simple: If we were putting more resources into testing for TB, we would be finding more TB,” said Dr. Yaw Adusi-Poku, who heads Ghana’s national TB control program.

That will require more molecular testing sites, more staff members trained to spot the disease, more people to ask questions at the clinic door, more nurses like the intrepid Mr. Boadi, who turns up at his patients’ doors to encourage them to have their families tested (and who frequently digs into his own pocket to help patients pay for bus fare to pick up their drugs).

Molecular diagnosis is considerably more expensive than the old method. Cepheid, the company that makes cartridges for the testing machines, recently agreed to cut the price of each one to $8 from $10. An analysis commissioned by Doctors Without Borders found that the cartridges could be made for under $5. Cepheid continues to charge $15 per test for the diagnosis of extremely drug-resistant TB, the most lethal form of the disease.

Funding for TB services in low- and middle-income countries fell to $5.8 billion in 2022 from $6.4 billion in 2018, which is just half of what the W.H.O. says is needed. About $1 billion is available each year for TB research, half the amount that the United Nations says is required.

At a special meeting on TB at the United Nations last month, governments committed to spending at least $22 billion a year on TB by 2027. But at a similar meeting in 2018, the same donors promised to spend $13 billion by 2022, less than half of which materialized.

“I’m happy that we have these innovations, but the fact that they exist, that the W.H.O. recommends them, doesn’t mean people have access to them,” said Dr. Madhukar Pai, who leads the McGill International TB Centre at McGill University in Montreal. “The costs are still too high, and you need someone to deliver them.”


































孤注一掷-線上看 完整版『2023』~4K線上看| 小鴨影音HD~1080p

【孤注一掷】- 線上看小鴨完整版 高清No More Bets」在线观看和下载HD~1080pL


孤注一掷-線上看【2023】HD – 在線觀看 [HK-No More Bets] 線上看~1080p

看《孤注一掷》-線上看 完整版 – 在线观看[No More Bets]电影高清[2023]~4K

【孤注一掷】-線上看【2023】|HD~1080p 在线观看和下载~4K


粽邪3:鬼門開【2023】線上看| 在线观看和下载~4K小鴨影音| HD-1080p

【粽邪3:鬼門開】- 線上看小鴨完整版 高清The Rope Curse 3」在线观看和下载HD~1080p

粽邪3:鬼門開-線上看【2023】HD – 在線觀看 [HK-The Rope Curse 3] 線上看~1080p

看《粽邪3:鬼門開》-線上看 完整版 – 在线观看[The Rope Curse 3]电影高清[2023]~4K

【粽邪3:鬼門開】-線上看【2023】|HD~1080p 在线观看和下载~4K


私刑教育3線上看【2023】| 在线观看和下载~4K小鴨影音| HD-1080p

《私刑教育3》線上看完整版HD~1080p – 在线观看【The Equalizer 3 2023】电影高清~4K

【私刑教育3】- 線上看小鴨完整版 高清The Equalizer 3」在线观看和下载HD~1080p

【伸冤人3】-線上看【2023】|HD~1080p 在线观看和下载~4K

伸冤人3-線上看 (2023) 完整版The Equalizer 3 完整版[4K/HD~1080p] 在線免費

伸冤人3-線上看 「完整版」[2023]高清电影HD~[1080P]完整的电影

【伸冤人3】- 線上看小鴨完整版 高清【The Equalizer 3 2023】在线观看和下载HD~1080p

¡REPELÍSPLUS!▷VER—The Equalizer 3 (2023) Película Completa

[Cuevana-3] Ver The Equalizer 3 (2023) Película Completa

¡VER!!—The Equalizer 3 Película Completa Castellano en Español Latino Gratis

[Cuevana-4] Ver—The Equalizer 3 (2023) Película Completa Online Gratis en Español latino

¡Flix—Ver The Equalizer 3 `El justiciero 3` (2023) Película Completa Online Español y latino





↑PelisPlus-VER↓ Fast & Furious X Película completa-español en línea gratis

[REPELIS verFast X (Fast & Furious 10) PELÍCULA COMPLETA Español

[Cuevana 4]!* Ver Fast & Furious 10 (Online) Película Completa 2023 en Español y Latino

✔Fast X (Fast & Furious 10) (2023)🎬 PELICULA COMPLETA➤ ESPAÑOL GRATIS

VOIR ▷ Fast X Film Complet En Francais HD [Regarder]

Regarder Fast X Film Complet En Francais [En HD Regarder]

!VOIR,!! — Fast & Furious X en Streaming-VF en Français, VOSTFR COMPLET

FILM ▷ Fast and Furious 10 en Streaming-VF en Français

ASSISTIR Velocidade Furiosa X 2023 FILME COMPLETO

Assistir Velocidade Furiosa X (2023) Filme Completo Online

!Assistir Filme Velozes e Furiosos 10 Completo HD 2023 Dublado Online

Assistir Velocidade Furiosa X 2023 Online Gratis (Filme HD)

[ดู.หนัง] เงือกน้อยผจญภัย (THE LITTLE MERMAID – 2023) เต็มเรื่อง HD พากย์ไทย ดูหนังใหม่ 1080I

ดูหนัง เงือกน้อยผจญภัย (2023) เต็มเรื่อง HD พากย์ไทย THAI HD Quality

[ดูหนัง.THAI] เงือกน้อยผจญภัย (2023) เต็มเรื่อง HD พากย์ไทย ฟรี on ยูทูบ

รู้ไว้ก่อนดู The Little Mermaid (2023) เงือกน้อยผจญภัย เต็ม เรื่อง

PELISPLUS !MEGA La Sirenita Pelicula Completa (HD) Espanol y Latino

VER_La Sirenita (2023) película completa en español latino


VER_La Sirenita (2023) película completa en español latino

REPELIS] Ver Transformers: El despertar de las bestias (2023) Película Online

[¡PELISPLUS!]*—Ver Transformers El despertar de las bestias [2023] Pelicula Completa Online en Español HD

Mega!-ver Transformers: El despertar de las bestias (Pelicula) HD online en espanol latino

PElis NUE (4k) ver Transformers: El despertar de las bestias ~Pelicula completa HD

[ดู-ไทย] ทรานส์ฟอร์เมอร์ส: กำเนิดจักรกลอสูร [TRANSFORMERS: RISE OF THE BEASTS-2023] – ดูหนังออนไลน์ (1080P) พากย์ไทย เต็มเรื่อง

ดู-หนัง!*] Transformers 2023 (ทรานส์ฟอร์เมอร์ส : กำเนิดจักรกลอสูร) ดูหนังออนไลน์ HD พากย์ไทย 1080p

ดูหนัง ทรานส์ฟอร์เมอร์ส: กำเนิดจักรกลอสูร (Transformers: Rise Of The Beasts) ออนไลน์ฟรี HD พากย์ไทย THAI!

[ดู.หนัง] ทรานส์ฟอร์เมอร์ส: กำเนิดจักรกลอสูร (2023) หนังเต็ม HD พากย์ไทย [Transformers: Rise of the Beasts]

Assistir Transformers: Rise of the Beasts [2023] Filme Completo Dublado Online Gratis em Portuguese

[[*Assistir]] Transformers: Rise of the Beasts Filme completo [ 2023 ] Dublado Portugues Grátis Online

Assistir Transformers O Despertar das Feras filme completo Dublado online Legendado

ASSISTIR! Transformers: Rise of the Beasts (2023) Filme Dublado Online Legendado HD Grátis

Transformers : Rise of the Beasts Streaming VF 2023 Regarder Film-Complet HD

!4K-VOIR!!@ — The Beasts en StreamingVF||COMPLET, VOSTFR-Gratuits

[.^WATCH^.] Transformers: Rise of the Beasts (2023) FullMovie Free Online Streaming on 123𝓶𝓸𝓿𝓲𝓮𝓼

[*𝐅𝐈𝐋𝐌𝐒 𝐕𝐎𝐈𝐑*] Transformers: Rise of the Beasts (2023) Français Gratuit et VF Complet




Teh pucuk