Malaria Apicomplexa

  • Construction of Red Blood Cells

    • Pathophysiology leads to iron deposition in tissues.

  • Malaria and Syphilis

    • Historically, malaria was used to treat syphilis due to its high heat causing fever in patients.

    • The infected patients experienced relapsing fevers as a treatment method since malaria was prevalent in areas like the southern US.

  • Definitions of Eradication vs. Elimination

    • Eradication: Complete removal of a disease from the environment, meaning it no longer exists anywhere (e.g., smallpox).

    • Elimination: Stopping the transmission of a disease in a specific geographic area while still having cases in nature.

    • Example: Malaria is still present globally but can be eliminated in certain countries with ongoing public health efforts.

  • Malaria Control Progress

    • Since 1951, the US has halted person-to-person transmission of malaria but not completely eradicated the mosquitoes.

    • Several countries still struggle with malaria due to varying health efforts and geographical factors impacting mosquito populations.

  • Malaria Life Cycle

    • Includes two distinct forms that determine the fever cycle length from infection to symptom onset.

    • Most severe pathology relates to the Plasmodium species:

    1. P. vivax - accounts for ~43% of cases.

    2. P. falciparum - known for more severe symptoms.

  • Schizont Formation

    • Schizont: A large cyst containing many merozoites resulting from hemoglobin digestion.

    • The cold and hot sweats experienced by patients result from this life cycle phase.

  • Environmental Impact on Malaria

    • Certain areas facilitate mosquito breeding environments, such as oases or accumulated water sources.

    • Diseases can persist even in traditionally non-endemic areas if conditions allow for mosquito habitation.

  • Disease Suppression Strategies

    • Aim to treat both symptomatic and asymptomatic individuals, particularly those who spread the disease unknowingly.

    • Prophylactic measures and public health initiatives:

    • Use of fogging trucks to control mosquito populations during outbreaks (e.g., West Nile virus).