Chlamydia psittacosis is an intracellular bird pathogen, which can be transmitted to other animal species and to humans. Psittacosis can host bird viruses, and which can trigger evolution of both the psittacosis and the viruses. Psittacosis has a remarkably similar presentation and clinical findings to covid-19. Psittacosis can become psittacosis pneumonia, which also has similar clinical and x-ray findings to severe and fatal cases of covid-19. In Feb. 2020, Sweden recently reported an outbreak of dozens of cases of psittacosis; and a psittacosis outbreak also occurred in Philadelphia during the Spanish flu pandemic, of 1918. Psittacosis can be treated with antibiotics, one of which is Azithromax.
Quoting from the article below: “Viral-bacterial co-infection often increases disease severity in both humans and animals. The role of viral-bacterial co-infection in animal-to-human transmission of infectious agents has not received sufficient attention and should be emphasized in the investigation of disease outbreaks in human and animals.”
Avian bird viruses can attach to avian bacterial pathogens as a bacteriophage; and pre-existing chronic bacterial infections can host covid-19 and protect the virus from the immune system. Investigating underlying bacterial pathogens, particularly co-existing bird pathogens, may help explain the variation in the disease in covid-19 patients; and open new avenues for prevention and treatment.