Accuprobe Awareness

Tuberculosis (TB) remains one of the most common infectious diseases worldwide. It is caused by the bacterium Mycobacterium tuberculosis . It most commonly affects the lungs (pulmonary TB), but it can also involve other organs (extra-pulmonary TB), such as the brain, lymph nodes, bones, kidneys, intestines, uterus, and other organs. Although several laboratory and radiological tests are available today, diagnosing TB is not always straightforward. Many patients become confused when one TB test is positive while another is negative. They often wonder, "Which report is correct?" Each TB test looks for a different aspect of the disease. Some detect the bacteria directly, while others detect the body's immune response. Therefore, discrepancies are expected in certain situations. Understanding the strengths and limitations of each test helps prevent unnecessary anxiety and inappropriate treatment. Not every mycobacterium causes tuberculosis. True tuberculosis is caused by memb...

  Rapid molecular diagnostics have transformed the diagnosis and management of tuberculosis (TB). CBNAAT (Cartridge-Based Nucleic Acid Amplification Test) and MTB PCR enable early detection of Mycobacterium tuberculosis (MTB) and provide rapid information on drug resistance. Traditionally, most attention has focused on detecting R ifampicin (RIF) resistance, as it is considered an important marker for multidrug-resistant tuberculosis (MDR-TB). However, limiting resistance detection to rifampicin alone may overlook another clinically significant challenge - Isoniazid (INH) resistance. Isoniazid is one of the most effective first-line anti-tubercular drugs and plays a major role in early bacterial killing during treatment. Resistance to INH can occur independently (INH monoresistance) or together with rifampicin resistance. When INH resistance remains undetected, patients may continue receiving standard treatment regimens that are less effective for their infection. The clinical ...

Human metapneumovirus (hMPV) is an important but often underappreciated respiratory virus that belongs to the Paramyxoviridae family. First identified in 2001, hMPV has emerged as a leading cause of acute respiratory infections (ARIs), particularly in young children, the elderly, and immunocompromised individuals. hMPV is distributed globally, with infections occurring year-round but peaking in late winter and early spring in temperate climates. Studies suggest that nearly all children are exposed to the virus by the age of five. Reinfections are common throughout life, although they tend to be less severe in healthy adults. Clinical Features:  The spectrum of hMPV infection ranges from asymptomatic to severe disease. Common clinical manifestations include: Mild upper respiratory tract symptoms: Runny nose, cough, and sore throat. Lower respiratory tract infections (LRTIs): Bronchiolitis, pneumonia, and exacerbation of asthma or chronic obstructive pulmo...

  Typhoid fever , caused by a gram negative bacteria Salmonella typhi , remains a significant global health concern. Accurate and timely diagnosis of typhoid fever is crucial for appropriate patient management and effective control of the disease. Current methods of diagnosis include Serology based tests like the convenonal WIDAL test and Rapid Card Tests (Typhidot Or Enterocheck) and the Blood Culture test. In recent years, molecular testing techniques, particularly Reverse Transcription Polymerase Chain Reaction (RT-PCR), have emerged as a significant advancement in typhoid diagnosis.  The Limitations of Traditional Methods:  The Widal test , based on the detection of antibodies against S. Typhi and S. paratyphi antigens, has long been used for typhoid diagnosis. However, it has several limitations, including cross-reactivity, lack of specificity, unable to diagnose in early stage (first week) and the inability to differentiate between current and past infections. Serol...

Mucormycosis refers to severe infectious diseases that are caused by filamentous fungi of the Mucorales order that primarily affect immunocompromised patients and patients with diabetes mellitus. Recently, an increasing incidence has been reported among COVID-19 patients in India. The most common genera in invasive mucormycosis are Rhizopus, Rhizomucor, Lichtheimia and Mucor, accounting for 90% of all cases. Clinically and radiographically, mucormycosis is often indistinguishable from other invasive fungal infections such as aspergillosis and remains difficult to diagnose. A definitive diagnosis of mucormycosis typically requires histopathological evidence or positive fungal culture from a specimen from the site of infection, which may be difficult to obtain in some patients. A molecular diagnostic approach, detecting circulating DNA of Mucorales (by PCR) in serum of patients, may help to diagnose invasive mucormycosis more quickly and to introduce directed therapy earlier and eventual...