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Tuberculosis (TB) is an infectious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. Tuberculosis generally affects the lungs, but it can also affect other parts of the body. Most infections show no symptoms, in which case it is known as latent tuberculosis. Around 10% of latent infections progress to active disease which, if left untreated, kill about half of those affected. Typical symptoms of active TB are chronic cough with blood-containing mucus, fever, night sweats, and weight loss. It was historically referred to as consumption due to the weight loss associated with the disease. Infection of other organs can cause a wide range of symptoms.
Mycobacterium tuberculosis, also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. First discovered in 1882 by Robert Koch, M. tuberculosis has an unusual, waxy coating on its cell surface primarily due to the presence of mycolic acid. This coating makes the cells impervious to Gram staining, and as a result, M. tuberculosis can appear weakly Gram-positive. Acid-fast stains such as Ziehl–Neelsen, or fluorescent stains such as auramine are used instead to identify M. tuberculosis with a microscope. The physiology of M. tuberculosis is highly aerobic and requires high levels of oxygen. Primarily a pathogen of the mammalian respiratory system, it infects the lungs. The most frequently used diagnostic methods for tuberculosis are the tuberculin skin test, acid-fast stain, culture, and polymerase chain reaction.
Directly observed treatment, short-course is the name given to the tuberculosis (TB) control strategy recommended by the World Health Organization. According to WHO, "The most cost-effective way to stop the spread of TB in communities with a high incidence is by curing it. The best curative method for TB is known as DOTS." DOTS has five main components:
Tuberculosis management describes the techniques and procedures utilized for treating tuberculosis (TB).
Multiple drug resistance (MDR), multidrug resistance or multiresistance is antimicrobial resistance shown by a species of microorganism to at least one antimicrobial drug in three or more antimicrobial categories. Antimicrobial categories are classifications of antimicrobial agents based on their mode of action and specific to target organisms. The MDR types most threatening to public health are MDR bacteria that resist multiple antibiotics; other types include MDR viruses, parasites.
Latent tuberculosis (LTB), also called latent tuberculosis infection (LTBI) is when a person is infected with Mycobacterium tuberculosis, but does not have active tuberculosis (TB). Active tuberculosis can be contagious while latent tuberculosis is not, and it is therefore not possible to get TB from someone with latent tuberculosis. The main risk is that approximately 10% of these people will go on to develop active tuberculosis. This is particularly true, and there is added risk, in particular situations such as medication that suppresses the immune system or advancing age.
TB Alliance is a not-for-profit product development partnership (PDP) dedicated to the discovery and development of new, faster-acting and affordable tuberculosis (TB) medicines. Since its inception in 2000, TB Alliance has worked to grow the field of available treatments for TB and now manages the largest pipeline of new TB drugs in history. It was founded in Cape Town, South Africa, and has since expanded. It is headquartered in New York City and has a regional office in Pretoria.
Extensively drug-resistant tuberculosis (XDR-TB) is a form of tuberculosis caused by bacteria that are resistant to some of the most effective anti-TB drugs. XDR-TB strains have arisen after the mismanagement of individuals with multidrug-resistant TB (MDR-TB).
Multidrug-resistant tuberculosis (MDR-TB) is a form of tuberculosis (TB) infection caused by bacteria that are resistant to treatment with at least two of the most powerful first-line anti-TB medications (drugs): isoniazid and rifampin. Some forms of TB are also resistant to second-line medications, and are called extensively drug-resistant TB (XDR-TB).
The National Tuberculosis Elimination Programme (NTEP), earlier known as the Revised National Tuberculosis Control Programme (RNTCP), is the Public Health initiative of the Government of India that organizes its anti-Tuberculosis efforts. It functions as a flagship component of the National Health Mission (NHM) and provides technical and managerial leadership to anti-tuberculosis activities in the country. As per the National Strategic Plan 2017–25, the program has a vision of achieving a "TB free India",with a strategies under the broad themes of "Prevent, Detect,Treat and Build pillars for universal coverage and social protection". The program provides, various free of cost, quality tuberculosis diagnosis and treatment services across the country through the government health system.
The 2007 tuberculosis scare occurred when Atlanta personal-injury lawyer Andrew "Drew" Speaker flew from Atlanta, Georgia, to Paris, France, and on to Greece and then Italy before returning on a flight from Prague, Czech Republic, to Montreal, Canada, where he crossed over the border and back into the United States while infected with multidrug-resistant tuberculosis. The Centers for Disease Control and Prevention believed at the time that Speaker was suffering from extensively drug-resistant tuberculosis (XDR-TB), but failed to inform Speaker of this worsened sickness before his travels abroad. The incident sparked a debate in Congress on the failure of federal customs agents to stop him. Upon Speaker's return to the United States, the CDC placed him under involuntary isolation using a provision of the Public Health Service Act. With this action, Speaker became the first individual subjected to a CDC isolation order since 1963.
Bedaquiline, sold under the brand name Sirturo, is a medication used to treat active tuberculosis. Specifically, it is used to treat multi-drug-resistant tuberculosis (MDR-TB) along with other medications for tuberculosis. It is used by mouth.
Pretomanid is an antibiotic medication used for the treatment of multi-drug-resistant tuberculosis affecting the lungs. It is generally used together with bedaquiline and linezolid. It is taken by mouth.
Tuberculosis is a serious public health problem in China. China has the world's third largest cases of tuberculosis, but progress in tuberculosis control was slow during the 1990s. Detection of tuberculosis had stagnated at around 30% of the estimated total of new cases, and multidrug-resistant tuberculosis was a major problem. These signs of inadequate tuberculosis control can be linked to a malfunctioning health system. The spread of severe acute respiratory syndrome (SARS) in 2003, brought to light substantial weaknesses in the country's public health system. After the government realized the impact that the SARS outbreak had on the country, they increased leadership in their health department. After the SARS epidemic was brought under control, the government increased its commitment and leadership to tackle public health problems and, among other efforts, increased public health funding, revised laws that concerned the control of infectious diseases, implemented the world's largest internet-based disease reporting system to improve transparency, reach and speed, and started a program to rebuild local public health facilities and national infrastructure.
Tuberculosis in India is a major health problem, causing about 220,000 deaths every year. In 2020, the Indian government made statements to eliminate tuberculosis from the country by 2025 through its National TB Elimination Program. Interventions in this program include major investment in health care, providing supplemental nutrition credit through the Nikshay Poshan Yojana, organizing a national epidemiological survey for tuberculosis, and organizing a national campaign to tie together the Indian government and private health infrastructure for the goal of eliminating the disease.
Operation ASHA(OpASHA) is a non-profit organization (NGO) founded in 2006 to bring tuberculosis (TB) treatment at economically feasible rates to disadvantaged communities. The organization's primary work is to detect and cure TB, as well as to prevent and treat multidrug-resistant tuberculosis (MDR-TB) in India and Cambodia. Operation ASHA specializes in last-mile connectivity, bridging the gap between government medicine distribution centers and the communities of patients to deliver treatment at the doorsteps of the under-served. In addition to detecting and curing TB, OpASHA's community health workers also educate the community about TB and its symptoms thereby helping to reduce the stigma there is regarding the disease. In addition to TB, Operation ASHA's model and technology has been used in many other diseases such as diabetes, hemophilia and mental health.
Prisons in Russia consist of four types of facilities: pre-trial institutions; educative or juvenile colonies; corrective colonies; and prisons.
Zarir Udwadia is an Indian pulmonologist and researcher. His work on drug resistant tuberculosis has led to improvements in India's National Tuberculosis Control Programme. Udwadia was the only Indian invited by the WHO to be part of the TB ‘Guidelines Group’, which formulated the 4th edition of the TB Guidelines, published in 2010. He was also the only doctor to be named among India's best strategists.
Jaime Bayona García is a Peruvian physician who focuses on public health and he has become a specialist in studying the epidemiology of tuberculosis. He is also known for his case studies on HIV/AIDS in Peru and other developing countries. Dr. Bayona has also done work on how public health systems should improve, in terms of providing the best approach to help the sick that cannot afford health care.
References
- 1 2 "WHO | Drug-resistant TB: Totally drug-resistant TB FAQ". WHO. Archived from the original on December 11, 2015. Retrieved 2019-08-15.
- ↑ Rowland, Katherine (2012). "Totally drug-resistant TB emerges in India". Nature News. doi:10.1038/nature.2012.9797. S2CID 84692169.
- ↑ Nathanson CM, Cuevas LE, Cunningham J, Perkins MD, Peeling RW, Guillerm M, Moussy F, Ramsay A (November 2010). "The TDR Tuberculosis Specimen Bank: a resource for diagnostic test developers". The International Journal of Tuberculosis and Lung Disease. 14 (11): 1461–7. PMID 20937188.
- ↑ "Totally Drug Resistant TB | Extremely, TDR, Italy, United States, India, curing TDR, WHO". TB Facts. Archived from the original on 2019-07-16. Retrieved 2019-08-15.