Malaria parasites
Plasmodium species use Anopheles mosquitoes. Vaccines and nets are public tools; treatment is clinical.
Global burden is uneven. Plasmodium falciparum still kills, especially children in endemic regions. That is a systems failure of nets, drugs and poverty — not a reason to fear pond water in every city equally.
Travel advice belongs with clinicians and public-health agencies. This page does not prescribe prophylaxis.
Body interfaces
Water-borne cysts
Giardia and Cryptosporidium (an apicomplexan neighbour in teaching) travel in water. Filters and boil notices are civic language.
Vector diseases
Trypanosomes and Leishmania map onto tsetse, sandflies and politics. Not a home culture.
Gut commensals
Some Entamoeba species are mostly harmless; E. histolytica is not. Names matter more than 'amoeba' as a scare word.
Classroom ecology
Watching Paramecium eat bacteria taught generations that ponds are cities.
Drug research
Antimalarials from quinine to artemisinin are history and ongoing resistance races — clinic-guided, not DIY.
Free-living ciliates in a classroom hay infusion are teachers, not a biohazard poster.
Keep exploring
More in Tree of microbes
Bacteria
Single-celled prokaryotes with cell walls ? the oldest widespread life form, and both partners and pathogens.
Familiarity 95Viruses
Packets of DNA or RNA that are not cells — they replicate only inside living hosts.
Familiarity 96Fungi
A eukaryotic kingdom of yeasts, moulds and mushrooms — chitin walls, external digestion, partners of plants.
Familiarity 80Archaea
A prokaryotic domain that is not bacteria — methanogens, extremophiles and no known human pathogens.
Familiarity 35Bacteriophages
Viruses that infect bacteria — Earth's most abundant biological entities, and a concept-level idea in medicine.
Familiarity 42