www.cdc.gov: Readability — week 2026-W38
What these mean
- Words per page
- Main-content word count.
- Reading ease (Flesch)
- 0–100; higher is easier. ~60+ is plain language; below ~30 is very hard.
- Grade level (Flesch-Kincaid)
- US school grade needed to read it; aim for ~8 or lower for the public.
- Scored
- A reading grade is only meaningful on running prose, so we score a page only when it has enough of it. Pages that are mostly links or cards (too little text) or mostly tables and data (not prose) are left unscored — a grade there would be misleading, no matter how many words they contain.
Per-page readability
Unexplained acronyms
CDC— 503 page(s)MMWR— 201 page(s)PDF— 197 page(s)MD— 192 page(s)GA— 167 page(s)US— 164 page(s)DC— 149 page(s)HTML— 143 page(s)MPH— 129 page(s)HIV— 119 page(s)URL— 98 page(s)MS— 93 page(s)ASCII— 84 page(s)HOME— 78 page(s)TABLE— 75 page(s)
Possible misspellings
LinkedIn— 333 page(s)cdc— 310 page(s)www— 177 page(s)mmwrq— 160 page(s)http— 140 page(s)https— 76 page(s)htm— 70 page(s)Zoonotic— 63 page(s)espa— 62 page(s)Archivo— 57 page(s)meros— 57 page(s)MailStop— 57 page(s)Espa— 56 page(s)doi— 56 page(s)Healthand— 55 page(s)Altmetric— 50 page(s)los— 49 page(s)pcd— 48 page(s)Mendeley— 45 page(s)del— 42 page(s)Prev— 41 page(s)epidemiologic— 40 page(s)mmwr— 38 page(s)todos— 36 page(s)pdf— 36 page(s)