Cowpox is similar to, but much milder than, the highly contagious and often deadly smallpox disease. Its close resemblance to the mild form of smallpox and the observation that dairymaids were immune from smallpox inspired the first smallpox vaccine, created and administered by English physician Edward Jenner.
San Leandro (CA state) ZIP code. ZIP code of San Leandro (CA) is 94577. Below you can find map of San Leandro, or look up other ZIP codes in California or other US states. If San Leandro's ZIP code is duplicated, and other places have same ZIP code number, you can use our ZIP code searcher by number 94577. San Leandro have more then one ZIP code.
Zip Code 91381 Description Zip Code 91381 is located in the state of California in the Reno metro area. Zip code 91381 is primarily located in Los Angeles County. The official US Postal Service name for 91381 is STEVENSON RANCH, California. Portions of zip code 91381 are contained within or border the city limits of Santa Clarita, CA, . Zip code 91381 is within area code 661, area code 747 and area code 818. 91381 can be classified socioeconically as a Middle Class class zipcode in comparison to other zipcodes in California.