Health
Tuberculosis Emerges as Leading Infectious Disease, Affecting 10.8 Million People Worldwide
Tuberculosis Emerges as Leading Infectious Disease, Affecting 10.8 Million People Worldwide
In a resurgence that has health officials alarmed, tuberculosis (TB) has once again claimed the title of the world’s deadliest infectious disease, with new cases reaching a record high of 10.8 million in 2023, according to the World Health Organization (WHO). This represents a stark increase from the 10.1 million cases recorded in 2020, illustrating the ongoing challenge in managing this ancient but persistent disease.
TB, a highly contagious airborne infection primarily targeting the lungs, is fueled by factors like undernutrition, HIV, diabetes, smoking, and alcohol abuse. Despite a drop in TB-related deaths, the toll remains high, with 1.25 million fatalities recorded last year, placing TB above COVID-19 as the leading infectious cause of death for the first time in three years.
The global distribution of TB cases highlights significant regional and national disparities. India accounts for 26% of all new cases, followed by Indonesia at 10%, with China, the Philippines, and Pakistan each contributing over 6%. Southeast Asia, Africa, and the Western Pacific emerged as the hardest-hit regions, collectively representing 86% of cases.
“TB occurs in every part of the world,” said Dr. Tereza Kasaeva, head of WHO’s global TB program, during a recent press briefing. “But we are not on track to eliminate it.”
Challenges in Containment
Despite advances in TB treatments, rapid diagnostics, and ongoing vaccine research, Kasaeva expressed concern that global efforts are falling short of the United Nations General Assembly (UNGA) targets set for 2027. These targets aim to provide rapid diagnostic testing and preventive treatment to those at risk, yet only 48% of newly diagnosed TB patients received a rapid test last year. Among high-risk groups, 56% of individuals with HIV and 21% of household contacts of TB patients received preventive care.
Drug-resistant TB remains a significant hurdle. In 2023, an estimated 400,000 people developed multi-drug-resistant TB, though only 44% of these patients were accurately diagnosed and treated. This lack of treatment access is particularly troubling, as drug-resistant TB requires more costly and complicated care. “Drug-resistant TB continues to pose a major public health threat,” Kasaeva warned, underscoring the need for timely access to effective treatments.
Funding Shortfalls Impede Progress
The UNGA has set a funding target of $22 billion to combat TB through prevention, diagnostics, and treatment. However, as of last year, only 26% of this goal had been met, with $5.7 billion allocated worldwide. Research funding is similarly limited, with only $1 billion allocated toward the $5 billion target in 2022. Kasaeva highlighted the pressing need for increased investment, noting that low- and middle-income countries are especially constrained by the current funding gap.
Despite these financial challenges, there are promising developments in TB vaccine research. Six vaccine candidates are in late-stage clinical trials, with the WHO optimistic that a new TB vaccine could become available within the next few years. “We’re seeing clinical trials in the hardest-hit countries, and preparations for vaccine distribution should begin now,” Kasaeva noted, expressing hope for future breakthroughs.
With cases of drug-resistant TB rising and funding for prevention and care lagging, health officials are calling for urgent international support to bridge financial and logistical gaps. The resurgence of TB underscores the need for a comprehensive, well-funded approach to contain what remains a leading cause of death worldwide.
Health
Global Mental Health Cases Near 1.2 Billion as Anxiety and Depression Drive Sharp Worldwide Rise
A major global analysis has found that mental health conditions have surged to an estimated 1.2 billion people worldwide, driven largely by steep increases in anxiety and depression over the past three decades.
The findings, published in The Lancet as part of the Global Burden of Disease Study 2023, show that the number of people living with mental disorders has almost doubled since 1990, marking a 95% rise. Researchers say major depressive disorder and anxiety disorders have seen even sharper growth, increasing by 131% and 158% respectively, making them the most prevalent mental health conditions globally.
The report describes mental illnesses as widespread conditions that create long-term disability and significant human suffering. It also highlights broader consequences for economies and public services, including reduced productivity, lower workforce participation and increasing pressure on health and welfare systems.
Researchers estimate that in 2023 alone, around 620 million females and 552 million males were affected by mental health conditions. While the overall burden is rising across both sexes, the study points to notable differences in the types and prevalence of disorders.
Among women, depression and anxiety were the most commonly reported conditions, alongside higher rates of eating disorders such as anorexia nervosa and bulimia nervosa. The report links this disparity to a mix of biological, social and structural factors, including exposure to domestic violence, sexual abuse, gender inequality and reproductive health-related changes.
In contrast, neurodevelopmental and behavioural disorders, including attention deficit hyperactivity disorder (ADHD), conduct disorder and autism spectrum conditions, were more frequently diagnosed in men.
Teenagers aged 15 to 19 were identified as the group experiencing the highest mental health burden globally, raising concerns about early onset of conditions and insufficient preventive care for young people.
The study identifies several key risk factors associated with mental illness, including childhood sexual violence, bullying and intimate partner violence. These factors are strongly linked to conditions such as depression, schizophrenia, bipolar disorder and anxiety disorders. However, researchers note that such exposures have remained relatively stable over time and account for only a portion of the overall rise.
According to the authors, broader drivers are likely contributing to the increasing prevalence of mental disorders. These include genetic and biological influences, poverty, inequality, and the growing impact of global crises such as armed conflict, pandemics, natural disasters and climate-related stress.
While mental health conditions have long been a leading cause of disability worldwide, the report warns that the situation is worsening. At the same time, health systems have not expanded services at a pace matching demand.
The authors caution that the gap between rising need and limited access to care is becoming more pronounced, leaving millions without adequate treatment or support.
Health
Europe Records Sharp Rise in Sexually Transmitted Infections, ECDC Warns
Health
White House Rejects Report It Blocked Return of Ebola-Infected US Doctor
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