At present, the nine-valent vaccines in China are generally from Merck in the United States, and not only in China, but also in many foreign countries, because both the four-valent and nine-valent vaccines are produced by Merck, and the effect is very good, which has a strong preventive effect on hpv infection.
At present, there is no company that can produce tetravalent and nonavalent vaccines in China, and it can only be imported from abroad. There are bivalent hpv vaccines in China.
Is the nine-valent vaccine made in China? number
At present, all the nine-valent vaccines are produced by Merck in the United States, but not in China. At present, some bivalent hpv vaccines produced in China are aimed at human papillomavirus hpv 16 and 18. These two viruses are still high-risk viruses that cause cervical cancer, and bivalent vaccine has a certain effect on them.
Nine-valent vaccine has a certain effect on the infection of hpv6, HPV 1 1, HPV 16, HPV 18, HPV3 1, HPV33, HPV45, HPV52 and HPV58, with a wider coverage, except for cervical cancer.
3 Can I still play the nine-valent vaccine after playing the four-valent vaccine? Generally, it is not necessary.
Generally, you don't need to take the nine-valent vaccine after the four-valent vaccine, because the four-valent vaccine has a very high prevention efficiency for cervical cancer and has a good protection effect on hpv high-risk viruses 16 and 18. If the nine-valent vaccine is given again, it will repeat immunization, which is not conducive to the effective use of the vaccine.
But the nine-valent vaccine is not only to prevent cervical cancer, but also to prevent condyloma acuminatum or vulvar cancer, anal cancer, genital warts and other diseases. However, it will take a year or more.
4 Nine-valent vaccine is divided into several times and three times.
Nine-valent vaccine generally needs to be injected three times, and the time is generally fixed. The first time you choose, the second time is usually the second month after the first injection, and the third injection time is usually the sixth month after the first month. Generally, these three injections need to be injected within six months or a year. If it expires, the effect may be reduced.