{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

LOWER RESPIRATORY SYSTEM INFECTIONS

LOWER RESPIRATORY SYSTEM INFECTIONS - Influenza Influenza...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
LOWER RESPIRATORY SYSTEM INFECTIONS Pneumonia - Primary, Secondary Lobar pneumonia - involves lobes Bronchial pneumonia - begins in bronchi Transmission: Primary - droplet nuclei, P/E nasopharynx. Secondary - due to normal flora, follows resistance. Disease: Localizes in lungs inflammation accumulation of fluids. Secondary Pneumonia - Streptococcus pneumoniae Gram pos. cocci. Causes pneumonia following severe illness of RT, debilitated patients, etc. Virulence: Part of URT normal flora, encapsulated, alpha hemolysins. Vaccine: Capsular antigens Primary Pneumonias - Caused by # pathogens. 1) Staphylococcus aureus - Gram pos. cocci 2) Klebsiella pneumonia - Gram neg. bacillus 3) Mycoplasma pneumoniae - lack cell wall, contagious 4) Chlamydia psittaci - Gram neg., intracellular 5) Legionella pneumophilia - Gram neg. bacillus, intracellular 6) Viruses can also cause primary pneumonia
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Influenza - Influenza Virus types A, B, C A - most virulent; responsible for most epidemics, pandemics B - less virulent; causes some epidemics C - least virulent; causes mild infections Virulence: invades m.m., ciliated epithelium of nasal, oropharynx, lungs Transmission: URT secretions - droplet nuclei P/E: nasopharynx Disease: Inc. pd. 1- 3 days. Destroys epithelium inflammation. Symptoms vary with antigenic type. Complications: secondary bacterial infections (pneumococcal pneumonia) Immunity: Active infection produces active immunity, but does not protect against future infections due to frequent antigenic changes in virus: 1) Antigenic drift: due to spontaneous mutations, A & B. 2) Antigenic shift: due to recombination with animal viruses, A only. Vaccine: inactivated viruses (current strains)...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern