Fever Reducer can prevent feline rhinotracheitis, calicivirus disease, and feline panleukopenia (feline distemper). These three diseases are also core infectious diseases in cats, and vaccination is the best way to prevent cats from getting sick. 
1. Fever30 is a vaccine brand. Common vaccine brands include Fever30, Intervet, and PHC (PHC is a Korean brand and is not recommended as it causes significant pain to cats during injection).
2. Feline triple vaccine is a type of vaccine that can prevent feline rhinotracheitis, calicivirus disease, and feline panleukopenia.
3. Intervet has a feline triple vaccine, and Flea and Tweezers has a deworming medication.
Precautions for Miao San Duo vaccination1. Kittens can start receiving vaccinations at 8 weeks of age and must be taken to the vet on time as instructed by the vet.
2. Before a cat is vaccinated, it is necessary to check its health in advance. The injection can only be performed if there are no symptoms such as respiratory problems or diarrhea.
3. Vaccination is not recommended for pregnant cats. If vaccination is necessary, it is recommended to choose inactivated vaccines, as they will not harm the embryo.
