It usually affects the respiratory system first. That is why it is imperative that dog owners vaccinate their pets against this disease.Dogs are vaccinated against distemper between the ages of four weeks and twenty weeks. Although this vaccination is a living saving one, it also has some side effects. However, not all dogs show the side effects of the vaccine.Here are some side effects of distemper vaccine that are commonly seen in dogs:Usually pups after being given the vaccine end up feeling lethargic. They may just lie and appear as though they are exhausted. Usually this lethargy lasts for around 2 to 3 days. It is quite common for pups to also get mild fever. Although it is nothing to get worried about, you should immediately rush your puppy to the vet if the fever increases.The injection site may get swollen. In fact, invariably a lump forms, but it disappears in a day or so. However, if the face of the pups is swollen after receiving the vaccination, you should immediately take your pup to the vet.Many pups are known to lose their appetite after receiving the distemper shot. This, in turn, causes weight loss as well as temporary weakness. At times diarrhea or vomiting might ensue. In case the puppy is not drinking any water or eating food, you will have to take it to the vet to prevent onset of dehydration.While the above mentioned side effects are rather mild and not life threatening, some of the side effects can be dangerous and fatal. A lot of publicity has been given to the dangers of Human Papilloma Virus (HPV) vaccine recently. Many of them unfounded, misleading and dangerous and could possibly prevent our ongoing efforts in our fight against cervical cancer. This article is an effort to counter this and inform all concerned regarding the true side effects associated with this vaccine.Human Papilloma Virus (HPV) vaccine is derived from the protein material from human papilloma viruses without any of the genetic material associated with the virus. The CDC and FDA monitor the Vaccine Adverse Event Reporting System (or VAERS). This system is a reporting mechanism for ANY adverse event after vaccination and allows detection of any safety concerns. There are known limitations in this system, such as the variable quality of data, variable reporting (both under reporting and stimulated reporting). This also fails to assess the link between cause and effect. Despite these limitations, this system is the best available and can be accessed by all concerned.Out of more than 28 million doses of this vaccine given as of January of 2010, 16000 episodes of adverse events were reported to VAERS. Over 90 percent of them were not serious events and included irritation at the site of the injection, nausea, headaches and fainting episode, especially in the adolescent age group. It is recommended that the patients be vaccinated while they are sitting and observed for about 15 minutes for fainting spells before being released.Regarding serious events that were reported, the most common was an entity called Venous Thrombotic Events (VTE). "Blood Clot in veins" in simple language! Investigations of these events showed co-morbid conditions such as obesity, oral contraceptives, smoking and other contributing factors that could explain these thrombotic events. Therefore, the association between vaccination and VTE appeared to be co-incidental rather than cause and effect.