Japan Reports Record Rise in Mycoplasma Pneumonia Cases
Tokyo: Japan is experiencing a significant increase in mycoplasma pneumonia cases, reaching the highest levels for this time of year in the past decade. Data from the National Institute of Infectious Diseases reveals that as of January 12, the weekly average number of mycoplasma pneumonia patients per reporting medical facility rose to 1.11, up from 0.34 the previous week.
Mycoplasma pneumonia, a bacterial infection commonly affecting children, presents symptoms such as fever, fatigue, headaches, and persistent coughing. Severe cases may develop into pneumonia, necessitating hospitalization. The incubation period ranges from 1 to 4 weeks, and symptoms can persist for several weeks.
In addition to mycoplasma pneumonia, erythema infectiosum, or “slapped cheek disease,” is also on the rise. This illness begins with cold-like symptoms followed by red rashes on the cheeks. Nationwide reports from approximately 3,000 medical facilities indicate an average of 0.94 cases per institution, up from 0.78 the previous week, according to Xinhua news agency.
Experts emphasize the importance of infection prevention measures, particularly as influenza continues to be widespread. Recommendations include wearing masks and practicing good hygiene to minimize the risk of transmission.
Mycoplasma pneumoniae, the primary pathogen associated with this disease, is transmitted through respiratory droplets during close contact. The incubation period typically ranges from 2 to 3 weeks. While infection rates peak during winter, they can occur throughout the year. Globally, approximately 1% of the population in regions like the United States is affected annually, though the true incidence may be higher due to mild or subclinical cases.
Outbreaks often occur in settings like military barracks, hospitals, and long-term care facilities. Despite being a common cause of community-acquired pneumonia, only 5–10% of those infected with Mycoplasma pneumoniae develop pneumonia. The infection affects both the upper and lower respiratory tracts across all age groups.
This surge underscores the need for heightened vigilance and preventive measures to address the rising cases of respiratory infections in Japan.
Nidhi Srivastava is a dietician. She holds a post-graduate degree in Nutrition and Dietetics from MRIIRS. With a profound passion for utilizing nutrition and lifestyle modifications to manage diseases, she is dedicated to advancing the field through rigorous research and fact-checking. Her expertise lies in evidence-based practice, ensuring the highest standards of dietary health and wellness.