Dodi Irawan
ROME – Diphtheria, a serious bacterial infection caused by Corynebacterium diphtheriae, has once again become a global concern in 2026. This disease not only causes alarming respiratory symptoms but also harbors a far more lethal latent danger: the toxin produced by the bacteria can spread through the bloodstream and silently damage vital organs, threatening patients' lives.
The World Health Organization (WHO) continuously emphasizes the importance of vigilance against diphtheria, especially amidst the potential decline in immunization coverage in some regions post-global pandemics. Although vaccines are available and proven effective, sporadic cases still emerge, indicating that the threat of diphtheria has not completely vanished.
The initial manifestations of diphtheria often resemble a common cold or sore throat. Sufferers typically experience a sore throat, mild fever, hoarseness, and swollen lymph nodes in the neck. However, the distinguishing characteristic is the formation of a thick, grayish or whitish membrane (pseudomembrane) on the tonsils, throat, or nose, which can make breathing and swallowing difficult.
The primary danger of diphtheria lies in the potent toxin released by the bacteria. This toxin possesses an extraordinary ability to spread from the primary infection site throughout the body, targeting cells in various organs. The heart becomes one of the main targets, triggering a condition known as myocarditis, an inflammation of the heart muscle that can lead to fatal heart failure.
In addition to the heart, the kidneys are also susceptible to damage from diphtheria toxin. Kidney damage can impair the body's blood filtering function, leading to serious complications such as acute kidney failure. The nervous system is not immune to the toxin's attack either, which can result in temporary or permanent paralysis of certain muscles, including respiratory muscles, making it a critical condition.
Diphtheria transmission occurs through respiratory droplets or nasal fluids from an infected person when they cough or sneeze. Direct contact with open wounds of a patient can also spread the bacteria. Densely populated environments and poor sanitation are risk factors that accelerate the spread of this disease.
Prevention is the main key to controlling diphtheria. Mass immunization programs with the DPT (Diphtheria, Pertussis, Tetanus) vaccine have proven highly effective in drastically reducing the incidence of the disease. It is crucial for every individual, especially children, to receive complete immunization according to the schedule recommended by health authorities.
If someone is diagnosed with diphtheria, immediate medical treatment is necessary. Treatment involves administering diphtheria antitoxin to neutralize the toxin that has not yet bound to body cells, and antibiotics to kill the causative bacteria. Patient isolation is also required to prevent further transmission.
The availability of vaccines and clear treatment protocols has significantly reduced the impact of diphtheria compared to the era before vaccine discovery. However, any complacency in immunization programs can create an opening for the disease to resurface, particularly in communities with low vaccine coverage. Recent incidents in various parts of the world serve as a strong reminder of the ongoing threat.
Editorial Insight: The sporadic re-emergence of diphtheria cases in 2026 underscores the critical importance of global vigilance and sustained commitment to immunization programs. This disease serves as a vital indicator of the strength of public health systems; any decline in vaccine coverage potentially opens the door to preventable outbreaks. Public education on the importance of immunization and the dangers of diphtheria toxin must be continuously promoted to protect the vital organs of the population from this silent threat. Failure to achieve herd immunity will burden healthcare systems and threaten lives that could otherwise be saved.
