Black Death ( bubonic plague ) is a Death yet to come after Corona virus which is being caused by a bacterial called “Yersinia pestis” which Normally spread by rat, rabbit, squirrel, rodents and many other animals.
It’s therefore transmitted through droplets from the affected human and consuming affected meat from the above mentioned animals.
Yersinia pestis, the causative agent of bubonic plague, has three remarkable attributes. First, it causes the most severe of all human bacterial infections as judged by historical records. Second, the emergence of Y. pestis occurred no later than 10 000 years ago and its dramatic evolution from an enteropathogen to agent of acute disease may still be in progress. Third, survival and multiplication of Y. pestis within the host and flea vector are largely mediated by laterally transferred DNA and removal of this imported information converts the formidable plague bacillus into an innocuous entity capable of only transient survival in its mammalian host, flea vector, or natural environments. The purpose of this chapter is to integrate these features and to outline the physiological and molecular mechanisms that enable Y. pestis to promote uncompromisingly destructive pathology.View chapterPurchase book
Yersinia pestis (formerly called Pasteurella pestis) is a short gram-negative rod that causes plague. It is a disease of rodents (squirrels, rabbits, rats) that is transmitted to humans by flea bites or by person-to-person contact through aerosol inhalation. Initial signs and symptoms are chills, fever, prostration, delirium, headache, vomiting, and diarrhea. There are three forms of plague: bubonic, septicemic, and pneumonic. Bubonic plague consists of lymphadenopathy, with palpable masses forming in the cervical, axillary, femoral, and inguinal areas. Signs of septicemia are those of shock and petechial hemorrhages. Plague pneumonia results from either metastatic infection or inhalation of the pathogen. Pneumonia occurs within a week of initial exposure and is characterized by chest pain, productive cough, dyspnea, and hemoptysis. The chest radiograph shows lower lobe infiltrates, possibly nodules, lymphadenopathy, and pleural effusions.View chapterPurchase book
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