The administration of vaccines duri...

The administration of vaccines during pregnancy attitude s a number of concerns to physicians and patients about the risk of transmitting a virus to a developing fetus. This risk is primarily theoretic. Live-virus vaccines are therefore generally contraindicated in pregnant women According to the Center for Disease sway and Prevention (CDC), (1) if a live-virus vaccine is inadvertently given to a pregnant woman, or if a woman becomes pregnant within four weeks after vaccination, she should be cautioned about potential effects on the fetus. Inadvertent administration of these vaccines, however, is not considered an indication for termination of the pregnancy.

No evidence exhibit tos an increased risk from vaccinating pregnant women with inactivated virus or bacterial vaccines or toxoids. (1) Therefore, if a patient is at high risk of being expos to a particular disease, if infection would confound a risk to the mother or fetus, and if the vaccine is unlikely to cause harm, the benefits of vaccinating a pregnant woman usually outweigh the potential risks.

Physicians should consider vaccinating pregnant women upon the basis of the risks of vaccination versus the benefits of protection in each particular situation, regardless of whether live or inactivated vaccines are used.

Vaccines commonly administered by the agency of family physicians, and their indication for use during pregnancy, are summarized in Table 1 (1)

Women of childbearing age ofttimes are concerned about whether breastfeeding is safe during immunization. Physicians should reassure their patients that no vaccines are contraindicated during breastfeeding. (1)

Tetanus and Diphtheria

The tetanus and diphtheria toxoids vaccine (Td) is effective in preventing tetanus and diphtheria, brace potentially life-threatening conditions. Diphtheria is an infection of the nasal, pharyngeal, laryngeal, or other mucous membranes that can cause neuritis, myocarditis, thrombocytopenia, and ascending paralysis. (2) Tetanus infection can cause production of a neurotoxin, leading to tetanic muscle contractions.

Td toxoid is routinely approveed for susceptible pregnant women. While no evidence exists to experiment upon that tetanus and diphtheria toxoids are teratogenic, (1) waiting until the inferior trimester of pregnancy to administer Td is a reasonable precaution, minimizing any disturb about the theoretic possibility of like reactions. (1) Previously vaccinated pregnant women who have not received a Td vaccination within the past 10 years should receive a booster dose. Pregnant women who are not immunized or solely partially immunized should complete the primary series. (1)

Influenza

febrile disease malaise, myalgia, and upper respiratory tract symptoms or infections characterize influenza infection. principally severe complications are the outcome of pneumonia secondary to influenza infection. There are three strains of influenza (A, B and C) with marks A and B responsible for epidemics in the United States.

The influenza vaccine is a killed virus preparation with an annually adjusted antigenic makeup. It should be administered annually between October and December to high-risk patients. The vaccine should be administered to all pregnant women who will be in the inferior or third trimester of pregnancy during the influenza season (which peaks from December to March in temperate climates if it be not that may extend into May in 20 percent of influenza seasons). (3) This recommendation is based in succession data from pandemics of 1918 and 1957 as well as limited studies done since then demonstrating that women in their secondary or third trimesters have higher morbidity, similar to other high-risk patients, from influenza infection. (4)

Immunization should be avoided in principally patients during the first trimester to avoid a coincidental association with spontaneous abortion, which is public in the first trimester. However, pregnant women with medical conditions that increase their risk for complications from influenza (eg asthma, cardiovascular disease, diabetes, chokeed immune system) should be vaccinated before the influenza season regardless of the pregnancy trimester. Studies of influenza immunization with more than 2000 pregnant women have demonstrated no adverse fetal general intents (1)

Hepatitis A

Hepatitis A infects approximately 100000 bodys annually in the United States, of which 100 die. (5) It is acquired via the fecal-oral course by person-to-person contact or ingestion of contaminated pabulum or water.

Hepatitis A vaccines are derived from viruses grown in diploid small cavity cultures and are formalin inactivated. (5) Safety of hepatitis A vaccination during pregnancy has not been determined. Because hepatitis A vaccine is produc from inactivated virus, the risk to the developing fetus is count uponed to be low. Therefore, theoretic risks of vaccination should be weighed against the risk for hepatitis A infection in pregnant women who may be at risk for in all senses Examples calling for immunization include travel to endemic areas or intravenous mix with drugs use during pregnancy. (6)