The Thalidomide issue was created in Germany over 50 years ago. When birth defects started the cause was traced to the German mfg.
Nearly every medical breakthrough involves animal testing and research.
If you’ve ever taken antibiotics, had a vaccine, a blood transfusion, dialysis, an organ transplant, chemotherapy, bypass surgery or joint replacement, you have benefitted from animal testing and research. In fact, practically every drug, treatment, medical device, diagnostic tool or cure we have today was developed with the help of lab animals.
Many diseases that once killed millions of people every year are now either preventable, treatable or have been eradicated altogether. Immunizations against polio, diphtheria, mumps, rubella and hepatitis save countless lives and the survival rates for many major diseases are at an all-time high thanks to the discovery of new drugs and the design of sophisticated medical devices and surgical procedures. In the coming years, a universal influenza vaccine may be a reality, as well as a vaccine to end the HIV/AIDS pandemic.
Animal testing and research saves lives
Since 1900, the average human life span in the United States has increased by almost 30 years. In 2015, infant mortality in the U.S. – a key indicator of the nation’s health – was measured at 5.87 deaths per 1,000 live births compared to 55 deaths per 1,000 live births in 1935.
https://fbresearch.org/medical-advances/
Yes there are horror stories concerning use of animals but I've not read about those that favor no animal use for testing come up with an alternative.